Home / 768,104.40-1,059,983.42-428,572.65

Finding the Fourth Proportional to 768,104.40, 1,059,983.42 and 428,572.65

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Solution

The fourth proportional to 768,104.40, 1,059,983.42 and 428,572.65 is: 591,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,104.40 : 1,059,983.42 = 428,572.65 : x
  2. Step 2: Convert to fraction form
    768,104.40/1,059,983.42 = 428,572.65/x
  3. Step 3: Cross multiply
    768,104.40x = 1,059,983.42 × 428,572.65
  4. Step 4: Simplify right side
    768,104.40x = 454,279,905,097.54
  5. Step 5: Solve for x
    x = 454,279,905,097.54/768,104.40
  6. Step 6: Final answer
    x = 591,429.89

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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.