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Finding the Fourth Proportional to 624,992.95, 862,486.25 and 353,148.85

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Solution

The fourth proportional to 624,992.95, 862,486.25 and 353,148.85 is: 487,343.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,992.95 : 862,486.25 = 353,148.85 : x
  2. Step 2: Convert to fraction form
    624,992.95/862,486.25 = 353,148.85/x
  3. Step 3: Cross multiply
    624,992.95x = 862,486.25 × 353,148.85
  4. Step 4: Simplify right side
    624,992.95x = 304,586,025,562.57
  5. Step 5: Solve for x
    x = 304,586,025,562.57/624,992.95
  6. Step 6: Final answer
    x = 487,343.14

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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.