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Finding the Fourth Proportional to 498,789, 688,328.82 and 272,435.04

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Solution

The fourth proportional to 498,789, 688,328.82 and 272,435.04 is: 375,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,789 : 688,328.82 = 272,435.04 : x
  2. Step 2: Convert to fraction form
    498,789/688,328.82 = 272,435.04/x
  3. Step 3: Cross multiply
    498,789x = 688,328.82 × 272,435.04
  4. Step 4: Simplify right side
    498,789x = 187,524,889,609.85
  5. Step 5: Solve for x
    x = 187,524,889,609.85/498,789
  6. Step 6: Final answer
    x = 375,960.36

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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.