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Finding the Fourth Proportional to 614,101.68, 920,977.56 and 389,122.56

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Solution

The fourth proportional to 614,101.68, 920,977.56 and 389,122.56 is: 583,572.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,101.68 : 920,977.56 = 389,122.56 : x
  2. Step 2: Convert to fraction form
    614,101.68/920,977.56 = 389,122.56/x
  3. Step 3: Cross multiply
    614,101.68x = 920,977.56 × 389,122.56
  4. Step 4: Simplify right side
    614,101.68x = 358,373,145,849.75
  5. Step 5: Solve for x
    x = 358,373,145,849.75/614,101.68
  6. Step 6: Final answer
    x = 583,572.98

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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.