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Finding the Fourth Proportional to 656,920.70, 985,074.78 and 341,292.86

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Solution

The fourth proportional to 656,920.70, 985,074.78 and 341,292.86 is: 511,780.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,920.70 : 985,074.78 = 341,292.86 : x
  2. Step 2: Convert to fraction form
    656,920.70/985,074.78 = 341,292.86/x
  3. Step 3: Cross multiply
    656,920.70x = 985,074.78 × 341,292.86
  4. Step 4: Simplify right side
    656,920.70x = 336,198,988,980.07
  5. Step 5: Solve for x
    x = 336,198,988,980.07/656,920.70
  6. Step 6: Final answer
    x = 511,780.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.