Home / 1,240,800.30-1,861,200.45-442,982.70

Finding the Fourth Proportional to 1,240,800.30, 1,861,200.45 and 442,982.70

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Solution

The fourth proportional to 1,240,800.30, 1,861,200.45 and 442,982.70 is: 664,474.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,800.30 : 1,861,200.45 = 442,982.70 : x
  2. Step 2: Convert to fraction form
    1,240,800.30/1,861,200.45 = 442,982.70/x
  3. Step 3: Cross multiply
    1,240,800.30x = 1,861,200.45 × 442,982.70
  4. Step 4: Simplify right side
    1,240,800.30x = 824,479,600,582.22
  5. Step 5: Solve for x
    x = 824,479,600,582.22/1,240,800.30
  6. Step 6: Final answer
    x = 664,474.05

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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.