Home / 765,811.93-1,057,147.20-545,191.42

Finding the Fourth Proportional to 765,811.93, 1,057,147.20 and 545,191.42

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Solution

The fourth proportional to 765,811.93, 1,057,147.20 and 545,191.42 is: 752,596.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,811.93 : 1,057,147.20 = 545,191.42 : x
  2. Step 2: Convert to fraction form
    765,811.93/1,057,147.20 = 545,191.42/x
  3. Step 3: Cross multiply
    765,811.93x = 1,057,147.20 × 545,191.42
  4. Step 4: Simplify right side
    765,811.93x = 576,347,583,117.02
  5. Step 5: Solve for x
    x = 576,347,583,117.02/765,811.93
  6. Step 6: Final answer
    x = 752,596.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.