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Finding the Fourth Proportional to 689,882.59, 951,497.80 and 448,243.66

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Solution

The fourth proportional to 689,882.59, 951,497.80 and 448,243.66 is: 618,225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,882.59 : 951,497.80 = 448,243.66 : x
  2. Step 2: Convert to fraction form
    689,882.59/951,497.80 = 448,243.66/x
  3. Step 3: Cross multiply
    689,882.59x = 951,497.80 × 448,243.66
  4. Step 4: Simplify right side
    689,882.59x = 426,502,856,353.95
  5. Step 5: Solve for x
    x = 426,502,856,353.95/689,882.59
  6. Step 6: Final answer
    x = 618,225.28

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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.