Home / 861,975.60-1,291,213.80-487,561.20

Finding the Fourth Proportional to 861,975.60, 1,291,213.80 and 487,561.20

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Solution

The fourth proportional to 861,975.60, 1,291,213.80 and 487,561.20 is: 730,352.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,975.60 : 1,291,213.80 = 487,561.20 : x
  2. Step 2: Convert to fraction form
    861,975.60/1,291,213.80 = 487,561.20/x
  3. Step 3: Cross multiply
    861,975.60x = 1,291,213.80 × 487,561.20
  4. Step 4: Simplify right side
    861,975.60x = 629,545,749,784.56
  5. Step 5: Solve for x
    x = 629,545,749,784.56/861,975.60
  6. Step 6: Final answer
    x = 730,352.17

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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.