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Finding the Fourth Proportional to 929,709, 1,394,405.62 and 424,151.14

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Solution

The fourth proportional to 929,709, 1,394,405.62 and 424,151.14 is: 636,154.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,709 : 1,394,405.62 = 424,151.14 : x
  2. Step 2: Convert to fraction form
    929,709/1,394,405.62 = 424,151.14/x
  3. Step 3: Cross multiply
    929,709x = 1,394,405.62 × 424,151.14
  4. Step 4: Simplify right side
    929,709x = 591,438,733,345.41
  5. Step 5: Solve for x
    x = 591,438,733,345.41/929,709
  6. Step 6: Final answer
    x = 636,154.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.