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Finding the Fourth Proportional to 625,320.40, 937,980.95 and 439,162.96

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Solution

The fourth proportional to 625,320.40, 937,980.95 and 439,162.96 is: 658,744.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,320.40 : 937,980.95 = 439,162.96 : x
  2. Step 2: Convert to fraction form
    625,320.40/937,980.95 = 439,162.96/x
  3. Step 3: Cross multiply
    625,320.40x = 937,980.95 × 439,162.96
  4. Step 4: Simplify right side
    625,320.40x = 411,926,490,425.61
  5. Step 5: Solve for x
    x = 411,926,490,425.61/625,320.40
  6. Step 6: Final answer
    x = 658,744.69

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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.