Home / 820,739.20-1,230,953.28-288,135.04

Finding the Fourth Proportional to 820,739.20, 1,230,953.28 and 288,135.04

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Solution

The fourth proportional to 820,739.20, 1,230,953.28 and 288,135.04 is: 432,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,739.20 : 1,230,953.28 = 288,135.04 : x
  2. Step 2: Convert to fraction form
    820,739.20/1,230,953.28 = 288,135.04/x
  3. Step 3: Cross multiply
    820,739.20x = 1,230,953.28 × 288,135.04
  4. Step 4: Simplify right side
    820,739.20x = 354,680,772,570.93
  5. Step 5: Solve for x
    x = 354,680,772,570.93/820,739.20
  6. Step 6: Final answer
    x = 432,147.96

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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.