Home / 498,771.60-688,321.20-272,417.10

Finding the Fourth Proportional to 498,771.60, 688,321.20 and 272,417.10

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Solution

The fourth proportional to 498,771.60, 688,321.20 and 272,417.10 is: 375,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,771.60 : 688,321.20 = 272,417.10 : x
  2. Step 2: Convert to fraction form
    498,771.60/688,321.20 = 272,417.10/x
  3. Step 3: Cross multiply
    498,771.60x = 688,321.20 × 272,417.10
  4. Step 4: Simplify right side
    498,771.60x = 187,510,465,172.52
  5. Step 5: Solve for x
    x = 187,510,465,172.52/498,771.60
  6. Step 6: Final answer
    x = 375,944.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.