Home / 781,711.60-1,172,956.20-308,412.40

Finding the Fourth Proportional to 781,711.60, 1,172,956.20 and 308,412.40

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Solution

The fourth proportional to 781,711.60, 1,172,956.20 and 308,412.40 is: 462,772.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,711.60 : 1,172,956.20 = 308,412.40 : x
  2. Step 2: Convert to fraction form
    781,711.60/1,172,956.20 = 308,412.40/x
  3. Step 3: Cross multiply
    781,711.60x = 1,172,956.20 × 308,412.40
  4. Step 4: Simplify right side
    781,711.60x = 361,754,236,736.88
  5. Step 5: Solve for x
    x = 361,754,236,736.88/781,711.60
  6. Step 6: Final answer
    x = 462,772.00

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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.