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Finding the Fourth Proportional to 678,896.79, 936,873.66 and 372,966.58

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Solution

The fourth proportional to 678,896.79, 936,873.66 and 372,966.58 is: 514,691.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,896.79 : 936,873.66 = 372,966.58 : x
  2. Step 2: Convert to fraction form
    678,896.79/936,873.66 = 372,966.58/x
  3. Step 3: Cross multiply
    678,896.79x = 936,873.66 × 372,966.58
  4. Step 4: Simplify right side
    678,896.79x = 349,422,564,862.28
  5. Step 5: Solve for x
    x = 349,422,564,862.28/678,896.79
  6. Step 6: Final answer
    x = 514,691.73

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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.