Home / 812,393.25-1,121,141.19-490,096.43

Finding the Fourth Proportional to 812,393.25, 1,121,141.19 and 490,096.43

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Solution

The fourth proportional to 812,393.25, 1,121,141.19 and 490,096.43 is: 676,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,393.25 : 1,121,141.19 = 490,096.43 : x
  2. Step 2: Convert to fraction form
    812,393.25/1,121,141.19 = 490,096.43/x
  3. Step 3: Cross multiply
    812,393.25x = 1,121,141.19 × 490,096.43
  4. Step 4: Simplify right side
    812,393.25x = 549,467,289,139.25
  5. Step 5: Solve for x
    x = 549,467,289,139.25/812,393.25
  6. Step 6: Final answer
    x = 676,356.30

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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.