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Finding the Fourth Proportional to 659,928.86, 910,702.41 and 358,122.86

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Solution

The fourth proportional to 659,928.86, 910,702.41 and 358,122.86 is: 494,209.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,928.86 : 910,702.41 = 358,122.86 : x
  2. Step 2: Convert to fraction form
    659,928.86/910,702.41 = 358,122.86/x
  3. Step 3: Cross multiply
    659,928.86x = 910,702.41 × 358,122.86
  4. Step 4: Simplify right side
    659,928.86x = 326,143,351,678.09
  5. Step 5: Solve for x
    x = 326,143,351,678.09/659,928.86
  6. Step 6: Final answer
    x = 494,209.86

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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.