Home / 724,880.40-1,087,320.60-658,395.60

Finding the Fourth Proportional to 724,880.40, 1,087,320.60 and 658,395.60

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Solution

The fourth proportional to 724,880.40, 1,087,320.60 and 658,395.60 is: 987,593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,880.40 : 1,087,320.60 = 658,395.60 : x
  2. Step 2: Convert to fraction form
    724,880.40/1,087,320.60 = 658,395.60/x
  3. Step 3: Cross multiply
    724,880.40x = 1,087,320.60 × 658,395.60
  4. Step 4: Simplify right side
    724,880.40x = 715,887,098,829.36
  5. Step 5: Solve for x
    x = 715,887,098,829.36/724,880.40
  6. Step 6: Final answer
    x = 987,593.40

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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.