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Finding the Fourth Proportional to 636,062, 877,239.76 and 431,777.12

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Solution

The fourth proportional to 636,062, 877,239.76 and 431,777.12 is: 595,495.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,062 : 877,239.76 = 431,777.12 : x
  2. Step 2: Convert to fraction form
    636,062/877,239.76 = 431,777.12/x
  3. Step 3: Cross multiply
    636,062x = 877,239.76 × 431,777.12
  4. Step 4: Simplify right side
    636,062x = 378,772,057,122.29
  5. Step 5: Solve for x
    x = 378,772,057,122.29/636,062
  6. Step 6: Final answer
    x = 595,495.50

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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.