Home / 638,872.52-881,521.38-384,240.11

Finding the Fourth Proportional to 638,872.52, 881,521.38 and 384,240.11

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Solution

The fourth proportional to 638,872.52, 881,521.38 and 384,240.11 is: 530,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,872.52 : 881,521.38 = 384,240.11 : x
  2. Step 2: Convert to fraction form
    638,872.52/881,521.38 = 384,240.11/x
  3. Step 3: Cross multiply
    638,872.52x = 881,521.38 × 384,240.11
  4. Step 4: Simplify right side
    638,872.52x = 338,715,867,610.95
  5. Step 5: Solve for x
    x = 338,715,867,610.95/638,872.52
  6. Step 6: Final answer
    x = 530,177.55

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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.