Home / 1,126,136,417.40-1,689,204,626.10-642,407,009.40

Finding the Fourth Proportional to 1,126,136,417.40, 1,689,204,626.10 and 642,407,009.40

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Solution

The fourth proportional to 1,126,136,417.40, 1,689,204,626.10 and 642,407,009.40 is: 963,610,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,136,417.40 : 1,689,204,626.10 = 642,407,009.40 : x
  2. Step 2: Convert to fraction form
    1,126,136,417.40/1,689,204,626.10 = 642,407,009.40/x
  3. Step 3: Cross multiply
    1,126,136,417.40x = 1,689,204,626.10 × 642,407,009.40
  4. Step 4: Simplify right side
    1,126,136,417.40x = 1,085,156,892,117,546,112
  5. Step 5: Solve for x
    x = 1,085,156,892,117,546,112/1,126,136,417.40
  6. Step 6: Final answer
    x = 963,610,514.10

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Half scale
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Double scale
Find fourth proportional to 1,126,136,418.40, 1,689,204,627.60 and 642,407,010.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.