Home / 689,961.76-951,832.56-498,672.16

Finding the Fourth Proportional to 689,961.76, 951,832.56 and 498,672.16

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Solution

The fourth proportional to 689,961.76, 951,832.56 and 498,672.16 is: 687,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,961.76 : 951,832.56 = 498,672.16 : x
  2. Step 2: Convert to fraction form
    689,961.76/951,832.56 = 498,672.16/x
  3. Step 3: Cross multiply
    689,961.76x = 951,832.56 × 498,672.16
  4. Step 4: Simplify right side
    689,961.76x = 474,652,398,653.53
  5. Step 5: Solve for x
    x = 474,652,398,653.53/689,961.76
  6. Step 6: Final answer
    x = 687,940.15

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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.