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Finding the Fourth Proportional to 575,486.40, 862,063.20 and 325,876.80

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Solution

The fourth proportional to 575,486.40, 862,063.20 and 325,876.80 is: 488,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,486.40 : 862,063.20 = 325,876.80 : x
  2. Step 2: Convert to fraction form
    575,486.40/862,063.20 = 325,876.80/x
  3. Step 3: Cross multiply
    575,486.40x = 862,063.20 × 325,876.80
  4. Step 4: Simplify right side
    575,486.40x = 280,926,397,013.76
  5. Step 5: Solve for x
    x = 280,926,397,013.76/575,486.40
  6. Step 6: Final answer
    x = 488,154.71

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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.