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Finding the Fourth Proportional to 709,562.48, 979,188.66 and 387,269.96

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Solution

The fourth proportional to 709,562.48, 979,188.66 and 387,269.96 is: 534,428.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,562.48 : 979,188.66 = 387,269.96 : x
  2. Step 2: Convert to fraction form
    709,562.48/979,188.66 = 387,269.96/x
  3. Step 3: Cross multiply
    709,562.48x = 979,188.66 × 387,269.96
  4. Step 4: Simplify right side
    709,562.48x = 379,210,353,190.65
  5. Step 5: Solve for x
    x = 379,210,353,190.65/709,562.48
  6. Step 6: Final answer
    x = 534,428.42

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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.