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Finding the Fourth Proportional to 542,606.40, 813,715.20 and 276,278.40

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Solution

The fourth proportional to 542,606.40, 813,715.20 and 276,278.40 is: 414,318.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,606.40 : 813,715.20 = 276,278.40 : x
  2. Step 2: Convert to fraction form
    542,606.40/813,715.20 = 276,278.40/x
  3. Step 3: Cross multiply
    542,606.40x = 813,715.20 × 276,278.40
  4. Step 4: Simplify right side
    542,606.40x = 224,811,933,511.68
  5. Step 5: Solve for x
    x = 224,811,933,511.68/542,606.40
  6. Step 6: Final answer
    x = 414,318.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.