Home / 384,734.80-576,065.40-278,981.20

Finding the Fourth Proportional to 384,734.80, 576,065.40 and 278,981.20

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Solution

The fourth proportional to 384,734.80, 576,065.40 and 278,981.20 is: 417,719.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,734.80 : 576,065.40 = 278,981.20 : x
  2. Step 2: Convert to fraction form
    384,734.80/576,065.40 = 278,981.20/x
  3. Step 3: Cross multiply
    384,734.80x = 576,065.40 × 278,981.20
  4. Step 4: Simplify right side
    384,734.80x = 160,711,416,570.48
  5. Step 5: Solve for x
    x = 160,711,416,570.48/384,734.80
  6. Step 6: Final answer
    x = 417,719.99

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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.