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Finding the Fourth Proportional to 539,525.80, 809,288.70 and 516,489.40

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Solution

The fourth proportional to 539,525.80, 809,288.70 and 516,489.40 is: 774,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,525.80 : 809,288.70 = 516,489.40 : x
  2. Step 2: Convert to fraction form
    539,525.80/809,288.70 = 516,489.40/x
  3. Step 3: Cross multiply
    539,525.80x = 809,288.70 × 516,489.40
  4. Step 4: Simplify right side
    539,525.80x = 417,989,035,089.78
  5. Step 5: Solve for x
    x = 417,989,035,089.78/539,525.80
  6. Step 6: Final answer
    x = 774,734.10

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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.