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Finding the Fourth Proportional to 707,713.68, 976,638.07 and 385,429.17

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Solution

The fourth proportional to 707,713.68, 976,638.07 and 385,429.17 is: 531,888.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,713.68 : 976,638.07 = 385,429.17 : x
  2. Step 2: Convert to fraction form
    707,713.68/976,638.07 = 385,429.17/x
  3. Step 3: Cross multiply
    707,713.68x = 976,638.07 × 385,429.17
  4. Step 4: Simplify right side
    707,713.68x = 376,424,800,710.50
  5. Step 5: Solve for x
    x = 376,424,800,710.50/707,713.68
  6. Step 6: Final answer
    x = 531,888.55

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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.