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Finding the Fourth Proportional to 887,259.78, 1,330,999.92 and 347,446.32

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Solution

The fourth proportional to 887,259.78, 1,330,999.92 and 347,446.32 is: 521,212.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,259.78 : 1,330,999.92 = 347,446.32 : x
  2. Step 2: Convert to fraction form
    887,259.78/1,330,999.92 = 347,446.32/x
  3. Step 3: Cross multiply
    887,259.78x = 1,330,999.92 × 347,446.32
  4. Step 4: Simplify right side
    887,259.78x = 462,451,024,124.29
  5. Step 5: Solve for x
    x = 462,451,024,124.29/887,259.78
  6. Step 6: Final answer
    x = 521,212.65

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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.