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Finding the Fourth Proportional to 389,812.80, 584,719.20 and 295,334.40

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Solution

The fourth proportional to 389,812.80, 584,719.20 and 295,334.40 is: 443,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,812.80 : 584,719.20 = 295,334.40 : x
  2. Step 2: Convert to fraction form
    389,812.80/584,719.20 = 295,334.40/x
  3. Step 3: Cross multiply
    389,812.80x = 584,719.20 × 295,334.40
  4. Step 4: Simplify right side
    389,812.80x = 172,687,694,100.48
  5. Step 5: Solve for x
    x = 172,687,694,100.48/389,812.80
  6. Step 6: Final answer
    x = 443,001.60

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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.