Home / 1,240,743.80-1,861,115.70-442,926.20

Finding the Fourth Proportional to 1,240,743.80, 1,861,115.70 and 442,926.20

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Solution

The fourth proportional to 1,240,743.80, 1,861,115.70 and 442,926.20 is: 664,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,743.80 : 1,861,115.70 = 442,926.20 : x
  2. Step 2: Convert to fraction form
    1,240,743.80/1,861,115.70 = 442,926.20/x
  3. Step 3: Cross multiply
    1,240,743.80x = 1,861,115.70 × 442,926.20
  4. Step 4: Simplify right side
    1,240,743.80x = 824,336,904,761.34
  5. Step 5: Solve for x
    x = 824,336,904,761.34/1,240,743.80
  6. Step 6: Final answer
    x = 664,389.30

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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.