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Finding the Fourth Proportional to 707,781, 976,718.10 and 385,484.04

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Solution

The fourth proportional to 707,781, 976,718.10 and 385,484.04 is: 531,957.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,781 : 976,718.10 = 385,484.04 : x
  2. Step 2: Convert to fraction form
    707,781/976,718.10 = 385,484.04/x
  3. Step 3: Cross multiply
    707,781x = 976,718.10 × 385,484.04
  4. Step 4: Simplify right side
    707,781x = 376,509,239,129.12
  5. Step 5: Solve for x
    x = 376,509,239,129.12/707,781
  6. Step 6: Final answer
    x = 531,957.26

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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.