Home / 1,180,990,640.40-1,771,485,960.60-689,199,075.60

Finding the Fourth Proportional to 1,180,990,640.40, 1,771,485,960.60 and 689,199,075.60

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Solution

The fourth proportional to 1,180,990,640.40, 1,771,485,960.60 and 689,199,075.60 is: 1,033,798,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180,990,640.40 : 1,771,485,960.60 = 689,199,075.60 : x
  2. Step 2: Convert to fraction form
    1,180,990,640.40/1,771,485,960.60 = 689,199,075.60/x
  3. Step 3: Cross multiply
    1,180,990,640.40x = 1,771,485,960.60 × 689,199,075.60
  4. Step 4: Simplify right side
    1,180,990,640.40x = 1,220,906,486,483,898,112
  5. Step 5: Solve for x
    x = 1,220,906,486,483,898,112/1,180,990,640.40
  6. Step 6: Final answer
    x = 1,033,798,613.40

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Double scale
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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.