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Finding the Fourth Proportional to 707,855.97, 976,856.19 and 385,565.31

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Solution

The fourth proportional to 707,855.97, 976,856.19 and 385,565.31 is: 532,088.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,855.97 : 976,856.19 = 385,565.31 : x
  2. Step 2: Convert to fraction form
    707,855.97/976,856.19 = 385,565.31/x
  3. Step 3: Cross multiply
    707,855.97x = 976,856.19 × 385,565.31
  4. Step 4: Simplify right side
    707,855.97x = 376,641,859,722.77
  5. Step 5: Solve for x
    x = 376,641,859,722.77/707,855.97
  6. Step 6: Final answer
    x = 532,088.27

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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.