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Finding the Fourth Proportional to 636,149.66, 877,887.18 and 349,663.59

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Solution

The fourth proportional to 636,149.66, 877,887.18 and 349,663.59 is: 482,536.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,149.66 : 877,887.18 = 349,663.59 : x
  2. Step 2: Convert to fraction form
    636,149.66/877,887.18 = 349,663.59/x
  3. Step 3: Cross multiply
    636,149.66x = 877,887.18 × 349,663.59
  4. Step 4: Simplify right side
    636,149.66x = 306,965,182,973.78
  5. Step 5: Solve for x
    x = 306,965,182,973.78/636,149.66
  6. Step 6: Final answer
    x = 482,536.11

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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.