Home / 812,437.38-1,122,331.44-648,879.15

Finding the Fourth Proportional to 812,437.38, 1,122,331.44 and 648,879.15

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Solution

The fourth proportional to 812,437.38, 1,122,331.44 and 648,879.15 is: 896,385.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,437.38 : 1,122,331.44 = 648,879.15 : x
  2. Step 2: Convert to fraction form
    812,437.38/1,122,331.44 = 648,879.15/x
  3. Step 3: Cross multiply
    812,437.38x = 1,122,331.44 × 648,879.15
  4. Step 4: Simplify right side
    812,437.38x = 728,257,470,805.48
  5. Step 5: Solve for x
    x = 728,257,470,805.48/812,437.38
  6. Step 6: Final answer
    x = 896,385.97

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.