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Finding the Fourth Proportional to 659,940.28, 910,717.56 and 358,134.28

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Solution

The fourth proportional to 659,940.28, 910,717.56 and 358,134.28 is: 494,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,940.28 : 910,717.56 = 358,134.28 : x
  2. Step 2: Convert to fraction form
    659,940.28/910,717.56 = 358,134.28/x
  3. Step 3: Cross multiply
    659,940.28x = 910,717.56 × 358,134.28
  4. Step 4: Simplify right side
    659,940.28x = 326,159,177,633.96
  5. Step 5: Solve for x
    x = 326,159,177,633.96/659,940.28
  6. Step 6: Final answer
    x = 494,225.29

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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.