Home / 638,979.52-881,896.08-384,471.04

Finding the Fourth Proportional to 638,979.52, 881,896.08 and 384,471.04

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Solution

The fourth proportional to 638,979.52, 881,896.08 and 384,471.04 is: 530,632.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,979.52 : 881,896.08 = 384,471.04 : x
  2. Step 2: Convert to fraction form
    638,979.52/881,896.08 = 384,471.04/x
  3. Step 3: Cross multiply
    638,979.52x = 881,896.08 × 384,471.04
  4. Step 4: Simplify right side
    638,979.52x = 339,063,503,049.52
  5. Step 5: Solve for x
    x = 339,063,503,049.52/638,979.52
  6. Step 6: Final answer
    x = 530,632.82

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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.