Home / 781,604.20-1,172,406.30-709,287.40

Finding the Fourth Proportional to 781,604.20, 1,172,406.30 and 709,287.40

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Solution

The fourth proportional to 781,604.20, 1,172,406.30 and 709,287.40 is: 1,063,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,604.20 : 1,172,406.30 = 709,287.40 : x
  2. Step 2: Convert to fraction form
    781,604.20/1,172,406.30 = 709,287.40/x
  3. Step 3: Cross multiply
    781,604.20x = 1,172,406.30 × 709,287.40
  4. Step 4: Simplify right side
    781,604.20x = 831,573,016,270.62
  5. Step 5: Solve for x
    x = 831,573,016,270.62/781,604.20
  6. Step 6: Final answer
    x = 1,063,931.10

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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.