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Finding the Fourth Proportional to 659,574.23, 989,531.90 and 386,251.25

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Solution

The fourth proportional to 659,574.23, 989,531.90 and 386,251.25 is: 579,476.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,574.23 : 989,531.90 = 386,251.25 : x
  2. Step 2: Convert to fraction form
    659,574.23/989,531.90 = 386,251.25/x
  3. Step 3: Cross multiply
    659,574.23x = 989,531.90 × 386,251.25
  4. Step 4: Simplify right side
    659,574.23x = 382,207,926,410.96
  5. Step 5: Solve for x
    x = 382,207,926,410.96/659,574.23
  6. Step 6: Final answer
    x = 579,476.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.