Home / 656,503.20-985,143.60-478,562.40

Finding the Fourth Proportional to 656,503.20, 985,143.60 and 478,562.40

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Solution

The fourth proportional to 656,503.20, 985,143.60 and 478,562.40 is: 718,127.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,503.20 : 985,143.60 = 478,562.40 : x
  2. Step 2: Convert to fraction form
    656,503.20/985,143.60 = 478,562.40/x
  3. Step 3: Cross multiply
    656,503.20x = 985,143.60 × 478,562.40
  4. Step 4: Simplify right side
    656,503.20x = 471,452,685,560.64
  5. Step 5: Solve for x
    x = 471,452,685,560.64/656,503.20
  6. Step 6: Final answer
    x = 718,127.02

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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.