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Finding the Fourth Proportional to 658,692.48, 908,983.68 and 372,206.40

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Solution

The fourth proportional to 658,692.48, 908,983.68 and 372,206.40 is: 513,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,692.48 : 908,983.68 = 372,206.40 : x
  2. Step 2: Convert to fraction form
    658,692.48/908,983.68 = 372,206.40/x
  3. Step 3: Cross multiply
    658,692.48x = 908,983.68 × 372,206.40
  4. Step 4: Simplify right side
    658,692.48x = 338,329,543,191.55
  5. Step 5: Solve for x
    x = 338,329,543,191.55/658,692.48
  6. Step 6: Final answer
    x = 513,638.08

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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.