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Finding the Fourth Proportional to 688,502.50, 950,222.55 and 386,696.50

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Solution

The fourth proportional to 688,502.50, 950,222.55 and 386,696.50 is: 533,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,502.50 : 950,222.55 = 386,696.50 : x
  2. Step 2: Convert to fraction form
    688,502.50/950,222.55 = 386,696.50/x
  3. Step 3: Cross multiply
    688,502.50x = 950,222.55 × 386,696.50
  4. Step 4: Simplify right side
    688,502.50x = 367,447,734,306.08
  5. Step 5: Solve for x
    x = 367,447,734,306.08/688,502.50
  6. Step 6: Final answer
    x = 533,691.21

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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.