Home / 812,542.86-1,218,811.20-243,921.42

Finding the Fourth Proportional to 812,542.86, 1,218,811.20 and 243,921.42

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Solution

The fourth proportional to 812,542.86, 1,218,811.20 and 243,921.42 is: 365,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,542.86 : 1,218,811.20 = 243,921.42 : x
  2. Step 2: Convert to fraction form
    812,542.86/1,218,811.20 = 243,921.42/x
  3. Step 3: Cross multiply
    812,542.86x = 1,218,811.20 × 243,921.42
  4. Step 4: Simplify right side
    812,542.86x = 297,294,158,615.90
  5. Step 5: Solve for x
    x = 297,294,158,615.90/812,542.86
  6. Step 6: Final answer
    x = 365,881.20

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1.5x scale

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.