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Finding the Fourth Proportional to 769,801.10, 1,152,514.65 and 727,907.90

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Solution

The fourth proportional to 769,801.10, 1,152,514.65 and 727,907.90 is: 1,089,793.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,801.10 : 1,152,514.65 = 727,907.90 : x
  2. Step 2: Convert to fraction form
    769,801.10/1,152,514.65 = 727,907.90/x
  3. Step 3: Cross multiply
    769,801.10x = 1,152,514.65 × 727,907.90
  4. Step 4: Simplify right side
    769,801.10x = 838,924,518,600.74
  5. Step 5: Solve for x
    x = 838,924,518,600.74/769,801.10
  6. Step 6: Final answer
    x = 1,089,793.87

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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.