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Finding the Fourth Proportional to 660,091.52, 910,936.86 and 358,285.52

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Solution

The fourth proportional to 660,091.52, 910,936.86 and 358,285.52 is: 494,439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,091.52 : 910,936.86 = 358,285.52 : x
  2. Step 2: Convert to fraction form
    660,091.52/910,936.86 = 358,285.52/x
  3. Step 3: Cross multiply
    660,091.52x = 910,936.86 × 358,285.52
  4. Step 4: Simplify right side
    660,091.52x = 326,375,486,572.27
  5. Step 5: Solve for x
    x = 326,375,486,572.27/660,091.52
  6. Step 6: Final answer
    x = 494,439.75

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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.