Home / 724,851.20-1,087,276.80-647,436.80

Finding the Fourth Proportional to 724,851.20, 1,087,276.80 and 647,436.80

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Solution

The fourth proportional to 724,851.20, 1,087,276.80 and 647,436.80 is: 971,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,851.20 : 1,087,276.80 = 647,436.80 : x
  2. Step 2: Convert to fraction form
    724,851.20/1,087,276.80 = 647,436.80/x
  3. Step 3: Cross multiply
    724,851.20x = 1,087,276.80 × 647,436.80
  4. Step 4: Simplify right side
    724,851.20x = 703,943,012,106.24
  5. Step 5: Solve for x
    x = 703,943,012,106.24/724,851.20
  6. Step 6: Final answer
    x = 971,155.20

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Double scale
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Similar ratio
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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.