Home / 726,901.60-1,091,000.40-427,007.20

Finding the Fourth Proportional to 726,901.60, 1,091,000.40 and 427,007.20

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Solution

The fourth proportional to 726,901.60, 1,091,000.40 and 427,007.20 is: 640,891.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,901.60 : 1,091,000.40 = 427,007.20 : x
  2. Step 2: Convert to fraction form
    726,901.60/1,091,000.40 = 427,007.20/x
  3. Step 3: Cross multiply
    726,901.60x = 1,091,000.40 × 427,007.20
  4. Step 4: Simplify right side
    726,901.60x = 465,865,026,002.88
  5. Step 5: Solve for x
    x = 465,865,026,002.88/726,901.60
  6. Step 6: Final answer
    x = 640,891.46

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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.