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Finding the Fourth Proportional to 707,497.71, 976,321.35 and 385,200.42

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Solution

The fourth proportional to 707,497.71, 976,321.35 and 385,200.42 is: 531,562.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,497.71 : 976,321.35 = 385,200.42 : x
  2. Step 2: Convert to fraction form
    707,497.71/976,321.35 = 385,200.42/x
  3. Step 3: Cross multiply
    707,497.71x = 976,321.35 × 385,200.42
  4. Step 4: Simplify right side
    707,497.71x = 376,079,394,074.97
  5. Step 5: Solve for x
    x = 376,079,394,074.97/707,497.71
  6. Step 6: Final answer
    x = 531,562.70

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1.5x scale

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.