Home / 1,247,148.72-1,870,789.87-394,155.47

Finding the Fourth Proportional to 1,247,148.72, 1,870,789.87 and 394,155.47

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Solution

The fourth proportional to 1,247,148.72, 1,870,789.87 and 394,155.47 is: 591,254.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,148.72 : 1,870,789.87 = 394,155.47 : x
  2. Step 2: Convert to fraction form
    1,247,148.72/1,870,789.87 = 394,155.47/x
  3. Step 3: Cross multiply
    1,247,148.72x = 1,870,789.87 × 394,155.47
  4. Step 4: Simplify right side
    1,247,148.72x = 737,382,055,127.57
  5. Step 5: Solve for x
    x = 737,382,055,127.57/1,247,148.72
  6. Step 6: Final answer
    x = 591,254.31

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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.