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Finding the Fourth Proportional to 499,397.28, 688,999.44 and 284,384.88

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Solution

The fourth proportional to 499,397.28, 688,999.44 and 284,384.88 is: 392,355.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,397.28 : 688,999.44 = 284,384.88 : x
  2. Step 2: Convert to fraction form
    499,397.28/688,999.44 = 284,384.88/x
  3. Step 3: Cross multiply
    499,397.28x = 688,999.44 × 284,384.88
  4. Step 4: Simplify right side
    499,397.28x = 195,941,023,064.47
  5. Step 5: Solve for x
    x = 195,941,023,064.47/499,397.28
  6. Step 6: Final answer
    x = 392,355.01

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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.