Home / 811,686.23-1,120,160.01-449,104.19

Finding the Fourth Proportional to 811,686.23, 1,120,160.01 and 449,104.19

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Solution

The fourth proportional to 811,686.23, 1,120,160.01 and 449,104.19 is: 619,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,686.23 : 1,120,160.01 = 449,104.19 : x
  2. Step 2: Convert to fraction form
    811,686.23/1,120,160.01 = 449,104.19/x
  3. Step 3: Cross multiply
    811,686.23x = 1,120,160.01 × 449,104.19
  4. Step 4: Simplify right side
    811,686.23x = 503,068,553,961.44
  5. Step 5: Solve for x
    x = 503,068,553,961.44/811,686.23
  6. Step 6: Final answer
    x = 619,782.05

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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.