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Finding the Fourth Proportional to 580,645.80, 869,816.70 and 511,372.20

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Solution

The fourth proportional to 580,645.80, 869,816.70 and 511,372.20 is: 766,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,645.80 : 869,816.70 = 511,372.20 : x
  2. Step 2: Convert to fraction form
    580,645.80/869,816.70 = 511,372.20/x
  3. Step 3: Cross multiply
    580,645.80x = 869,816.70 × 511,372.20
  4. Step 4: Simplify right side
    580,645.80x = 444,800,079,475.74
  5. Step 5: Solve for x
    x = 444,800,079,475.74/580,645.80
  6. Step 6: Final answer
    x = 766,043.74

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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.