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Finding the Fourth Proportional to 688,646.67, 950,331.56 and 382,713.36

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Solution

The fourth proportional to 688,646.67, 950,331.56 and 382,713.36 is: 528,143.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,646.67 : 950,331.56 = 382,713.36 : x
  2. Step 2: Convert to fraction form
    688,646.67/950,331.56 = 382,713.36/x
  3. Step 3: Cross multiply
    688,646.67x = 950,331.56 × 382,713.36
  4. Step 4: Simplify right side
    688,646.67x = 363,704,582,528.08
  5. Step 5: Solve for x
    x = 363,704,582,528.08/688,646.67
  6. Step 6: Final answer
    x = 528,143.96

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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.