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Finding the Fourth Proportional to 502,419.68, 693,338.96 and 276,079.76

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Solution

The fourth proportional to 502,419.68, 693,338.96 and 276,079.76 is: 380,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,419.68 : 693,338.96 = 276,079.76 : x
  2. Step 2: Convert to fraction form
    502,419.68/693,338.96 = 276,079.76/x
  3. Step 3: Cross multiply
    502,419.68x = 693,338.96 × 276,079.76
  4. Step 4: Simplify right side
    502,419.68x = 191,416,853,675.45
  5. Step 5: Solve for x
    x = 191,416,853,675.45/502,419.68
  6. Step 6: Final answer
    x = 380,989.96

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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.