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Finding the Fourth Proportional to 768,061.60, 1,151,120.40 and 294,114.40

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Solution

The fourth proportional to 768,061.60, 1,151,120.40 and 294,114.40 is: 440,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,061.60 : 1,151,120.40 = 294,114.40 : x
  2. Step 2: Convert to fraction form
    768,061.60/1,151,120.40 = 294,114.40/x
  3. Step 3: Cross multiply
    768,061.60x = 1,151,120.40 × 294,114.40
  4. Step 4: Simplify right side
    768,061.60x = 338,561,085,773.76
  5. Step 5: Solve for x
    x = 338,561,085,773.76/768,061.60
  6. Step 6: Final answer
    x = 440,799.39

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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.