Home / 782,666.40-1,175,425.20-684,688.80

Finding the Fourth Proportional to 782,666.40, 1,175,425.20 and 684,688.80

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Solution

The fourth proportional to 782,666.40, 1,175,425.20 and 684,688.80 is: 1,028,280.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,666.40 : 1,175,425.20 = 684,688.80 : x
  2. Step 2: Convert to fraction form
    782,666.40/1,175,425.20 = 684,688.80/x
  3. Step 3: Cross multiply
    782,666.40x = 1,175,425.20 × 684,688.80
  4. Step 4: Simplify right side
    782,666.40x = 804,800,469,677.76
  5. Step 5: Solve for x
    x = 804,800,469,677.76/782,666.40
  6. Step 6: Final answer
    x = 1,028,280.34

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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.