Home / 812,871.11-1,121,747.40-450,293.85

Finding the Fourth Proportional to 812,871.11, 1,121,747.40 and 450,293.85

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Solution

The fourth proportional to 812,871.11, 1,121,747.40 and 450,293.85 is: 621,397.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,871.11 : 1,121,747.40 = 450,293.85 : x
  2. Step 2: Convert to fraction form
    812,871.11/1,121,747.40 = 450,293.85/x
  3. Step 3: Cross multiply
    812,871.11x = 1,121,747.40 × 450,293.85
  4. Step 4: Simplify right side
    812,871.11x = 505,115,955,473.49
  5. Step 5: Solve for x
    x = 505,115,955,473.49/812,871.11
  6. Step 6: Final answer
    x = 621,397.35

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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.