Home / 769,655.40-1,154,811.15-485,564.10

Finding the Fourth Proportional to 769,655.40, 1,154,811.15 and 485,564.10

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Solution

The fourth proportional to 769,655.40, 1,154,811.15 and 485,564.10 is: 728,553.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,655.40 : 1,154,811.15 = 485,564.10 : x
  2. Step 2: Convert to fraction form
    769,655.40/1,154,811.15 = 485,564.10/x
  3. Step 3: Cross multiply
    769,655.40x = 1,154,811.15 × 485,564.10
  4. Step 4: Simplify right side
    769,655.40x = 560,734,836,719.72
  5. Step 5: Solve for x
    x = 560,734,836,719.72/769,655.40
  6. Step 6: Final answer
    x = 728,553.11

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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.