Home / 1,126,926,020.40-1,690,389,030.60-309,037,009.20

Finding the Fourth Proportional to 1,126,926,020.40, 1,690,389,030.60 and 309,037,009.20

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Solution

The fourth proportional to 1,126,926,020.40, 1,690,389,030.60 and 309,037,009.20 is: 463,555,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,926,020.40 : 1,690,389,030.60 = 309,037,009.20 : x
  2. Step 2: Convert to fraction form
    1,126,926,020.40/1,690,389,030.60 = 309,037,009.20/x
  3. Step 3: Cross multiply
    1,126,926,020.40x = 1,690,389,030.60 × 309,037,009.20
  4. Step 4: Simplify right side
    1,126,926,020.40x = 522,392,770,401,111,232
  5. Step 5: Solve for x
    x = 522,392,770,401,111,232/1,126,926,020.40
  6. Step 6: Final answer
    x = 463,555,513.80

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Double scale
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Similar ratio
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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.