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Finding the Fourth Proportional to 631,159.75, 870,423.52 and 493,356.88

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Solution

The fourth proportional to 631,159.75, 870,423.52 and 493,356.88 is: 680,381.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,159.75 : 870,423.52 = 493,356.88 : x
  2. Step 2: Convert to fraction form
    631,159.75/870,423.52 = 493,356.88/x
  3. Step 3: Cross multiply
    631,159.75x = 870,423.52 × 493,356.88
  4. Step 4: Simplify right side
    631,159.75x = 429,429,425,286.92
  5. Step 5: Solve for x
    x = 429,429,425,286.92/631,159.75
  6. Step 6: Final answer
    x = 680,381.52

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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.