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Finding the Fourth Proportional to 638,587.32, 958,254.42 and 354,517.08

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Solution

The fourth proportional to 638,587.32, 958,254.42 and 354,517.08 is: 531,982.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,587.32 : 958,254.42 = 354,517.08 : x
  2. Step 2: Convert to fraction form
    638,587.32/958,254.42 = 354,517.08/x
  3. Step 3: Cross multiply
    638,587.32x = 958,254.42 × 354,517.08
  4. Step 4: Simplify right side
    638,587.32x = 339,717,558,875.49
  5. Step 5: Solve for x
    x = 339,717,558,875.49/638,587.32
  6. Step 6: Final answer
    x = 531,982.94

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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.