Home / 389,713.20-584,569.80-326,727.60

Finding the Fourth Proportional to 389,713.20, 584,569.80 and 326,727.60

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Solution

The fourth proportional to 389,713.20, 584,569.80 and 326,727.60 is: 490,091.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,713.20 : 584,569.80 = 326,727.60 : x
  2. Step 2: Convert to fraction form
    389,713.20/584,569.80 = 326,727.60/x
  3. Step 3: Cross multiply
    389,713.20x = 584,569.80 × 326,727.60
  4. Step 4: Simplify right side
    389,713.20x = 190,995,087,786.48
  5. Step 5: Solve for x
    x = 190,995,087,786.48/389,713.20
  6. Step 6: Final answer
    x = 490,091.40

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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.