Home / 1,240,719.80-1,861,079.70-442,902.20

Finding the Fourth Proportional to 1,240,719.80, 1,861,079.70 and 442,902.20

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Solution

The fourth proportional to 1,240,719.80, 1,861,079.70 and 442,902.20 is: 664,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,719.80 : 1,861,079.70 = 442,902.20 : x
  2. Step 2: Convert to fraction form
    1,240,719.80/1,861,079.70 = 442,902.20/x
  3. Step 3: Cross multiply
    1,240,719.80x = 1,861,079.70 × 442,902.20
  4. Step 4: Simplify right side
    1,240,719.80x = 824,276,293,505.34
  5. Step 5: Solve for x
    x = 824,276,293,505.34/1,240,719.80
  6. Step 6: Final answer
    x = 664,353.30

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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.