Home / 453,983.48-680,973.39-138,439.47

Finding the Fourth Proportional to 453,983.48, 680,973.39 and 138,439.47

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Solution

The fourth proportional to 453,983.48, 680,973.39 and 138,439.47 is: 207,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,983.48 : 680,973.39 = 138,439.47 : x
  2. Step 2: Convert to fraction form
    453,983.48/680,973.39 = 138,439.47/x
  3. Step 3: Cross multiply
    453,983.48x = 680,973.39 × 138,439.47
  4. Step 4: Simplify right side
    453,983.48x = 94,273,595,195.70
  5. Step 5: Solve for x
    x = 94,273,595,195.70/453,983.48
  6. Step 6: Final answer
    x = 207,658.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.