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Finding the Fourth Proportional to 674,250.40, 930,493.84 and 387,770.70

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Solution

The fourth proportional to 674,250.40, 930,493.84 and 387,770.70 is: 535,139.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,250.40 : 930,493.84 = 387,770.70 : x
  2. Step 2: Convert to fraction form
    674,250.40/930,493.84 = 387,770.70/x
  3. Step 3: Cross multiply
    674,250.40x = 930,493.84 × 387,770.70
  4. Step 4: Simplify right side
    674,250.40x = 360,818,247,682.49
  5. Step 5: Solve for x
    x = 360,818,247,682.49/674,250.40
  6. Step 6: Final answer
    x = 535,139.83

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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.