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Finding the Fourth Proportional to 636,132.34, 877,864.53 and 349,681.78

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Solution

The fourth proportional to 636,132.34, 877,864.53 and 349,681.78 is: 482,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,132.34 : 877,864.53 = 349,681.78 : x
  2. Step 2: Convert to fraction form
    636,132.34/877,864.53 = 349,681.78/x
  3. Step 3: Cross multiply
    636,132.34x = 877,864.53 × 349,681.78
  4. Step 4: Simplify right side
    636,132.34x = 306,973,231,449.26
  5. Step 5: Solve for x
    x = 306,973,231,449.26/636,132.34
  6. Step 6: Final answer
    x = 482,561.90

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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.