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Finding the Fourth Proportional to 676,301.76, 933,294.96 and 389,819.88

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Solution

The fourth proportional to 676,301.76, 933,294.96 and 389,819.88 is: 537,950.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,301.76 : 933,294.96 = 389,819.88 : x
  2. Step 2: Convert to fraction form
    676,301.76/933,294.96 = 389,819.88/x
  3. Step 3: Cross multiply
    676,301.76x = 933,294.96 × 389,819.88
  4. Step 4: Simplify right side
    676,301.76x = 363,816,929,311.81
  5. Step 5: Solve for x
    x = 363,816,929,311.81/676,301.76
  6. Step 6: Final answer
    x = 537,950.59

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1.5x scale

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.