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Finding the Fourth Proportional to 614,855.80, 921,419.70 and 488,711.80

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Solution

The fourth proportional to 614,855.80, 921,419.70 and 488,711.80 is: 732,380.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,855.80 : 921,419.70 = 488,711.80 : x
  2. Step 2: Convert to fraction form
    614,855.80/921,419.70 = 488,711.80/x
  3. Step 3: Cross multiply
    614,855.80x = 921,419.70 × 488,711.80
  4. Step 4: Simplify right side
    614,855.80x = 450,308,680,142.46
  5. Step 5: Solve for x
    x = 450,308,680,142.46/614,855.80
  6. Step 6: Final answer
    x = 732,380.96

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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.