Home / 812,439.38-1,122,334.20-648,881.16

Finding the Fourth Proportional to 812,439.38, 1,122,334.20 and 648,881.16

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Solution

The fourth proportional to 812,439.38, 1,122,334.20 and 648,881.16 is: 896,388.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,439.38 : 1,122,334.20 = 648,881.16 : x
  2. Step 2: Convert to fraction form
    812,439.38/1,122,334.20 = 648,881.16/x
  3. Step 3: Cross multiply
    812,439.38x = 1,122,334.20 × 648,881.16
  4. Step 4: Simplify right side
    812,439.38x = 728,261,517,603.67
  5. Step 5: Solve for x
    x = 728,261,517,603.67/812,439.38
  6. Step 6: Final answer
    x = 896,388.75

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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.