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Finding the Fourth Proportional to 709,833.30, 979,583.82 and 387,544.23

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Solution

The fourth proportional to 709,833.30, 979,583.82 and 387,544.23 is: 534,818.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,833.30 : 979,583.82 = 387,544.23 : x
  2. Step 2: Convert to fraction form
    709,833.30/979,583.82 = 387,544.23/x
  3. Step 3: Cross multiply
    709,833.30x = 979,583.82 × 387,544.23
  4. Step 4: Simplify right side
    709,833.30x = 379,632,057,242.36
  5. Step 5: Solve for x
    x = 379,632,057,242.36/709,833.30
  6. Step 6: Final answer
    x = 534,818.61

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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.