Home / 891,127.80-1,336,691.70-260,105.40

Finding the Fourth Proportional to 891,127.80, 1,336,691.70 and 260,105.40

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Solution

The fourth proportional to 891,127.80, 1,336,691.70 and 260,105.40 is: 390,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,127.80 : 1,336,691.70 = 260,105.40 : x
  2. Step 2: Convert to fraction form
    891,127.80/1,336,691.70 = 260,105.40/x
  3. Step 3: Cross multiply
    891,127.80x = 1,336,691.70 × 260,105.40
  4. Step 4: Simplify right side
    891,127.80x = 347,680,729,305.18
  5. Step 5: Solve for x
    x = 347,680,729,305.18/891,127.80
  6. Step 6: Final answer
    x = 390,158.10

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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.