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Finding the Fourth Proportional to 580,386.60, 870,191.10 and 281,010.60

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Solution

The fourth proportional to 580,386.60, 870,191.10 and 281,010.60 is: 421,327.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,386.60 : 870,191.10 = 281,010.60 : x
  2. Step 2: Convert to fraction form
    580,386.60/870,191.10 = 281,010.60/x
  3. Step 3: Cross multiply
    580,386.60x = 870,191.10 × 281,010.60
  4. Step 4: Simplify right side
    580,386.60x = 244,532,923,125.66
  5. Step 5: Solve for x
    x = 244,532,923,125.66/580,386.60
  6. Step 6: Final answer
    x = 421,327.65

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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.