Home / 812,561.16-1,121,337.54-449,977.08

Finding the Fourth Proportional to 812,561.16, 1,121,337.54 and 449,977.08

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Solution

The fourth proportional to 812,561.16, 1,121,337.54 and 449,977.08 is: 620,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,561.16 : 1,121,337.54 = 449,977.08 : x
  2. Step 2: Convert to fraction form
    812,561.16/1,121,337.54 = 449,977.08/x
  3. Step 3: Cross multiply
    812,561.16x = 1,121,337.54 × 449,977.08
  4. Step 4: Simplify right side
    812,561.16x = 504,576,191,943.58
  5. Step 5: Solve for x
    x = 504,576,191,943.58/812,561.16
  6. Step 6: Final answer
    x = 620,970.11

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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.