Home / 1,102,405.40-1,653,608.10-392,505.20

Finding the Fourth Proportional to 1,102,405.40, 1,653,608.10 and 392,505.20

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Solution

The fourth proportional to 1,102,405.40, 1,653,608.10 and 392,505.20 is: 588,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,405.40 : 1,653,608.10 = 392,505.20 : x
  2. Step 2: Convert to fraction form
    1,102,405.40/1,653,608.10 = 392,505.20/x
  3. Step 3: Cross multiply
    1,102,405.40x = 1,653,608.10 × 392,505.20
  4. Step 4: Simplify right side
    1,102,405.40x = 649,049,778,012.12
  5. Step 5: Solve for x
    x = 649,049,778,012.12/1,102,405.40
  6. Step 6: Final answer
    x = 588,757.80

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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.