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Finding the Fourth Proportional to 495,561.60, 683,798.40 and 291,715.20

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Solution

The fourth proportional to 495,561.60, 683,798.40 and 291,715.20 is: 402,521.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,561.60 : 683,798.40 = 291,715.20 : x
  2. Step 2: Convert to fraction form
    495,561.60/683,798.40 = 291,715.20/x
  3. Step 3: Cross multiply
    495,561.60x = 683,798.40 × 291,715.20
  4. Step 4: Simplify right side
    495,561.60x = 199,474,387,015.68
  5. Step 5: Solve for x
    x = 199,474,387,015.68/495,561.60
  6. Step 6: Final answer
    x = 402,521.88

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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.