Home / 720,309.28-1,080,147.35-383,269.82

Finding the Fourth Proportional to 720,309.28, 1,080,147.35 and 383,269.82

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Solution

The fourth proportional to 720,309.28, 1,080,147.35 and 383,269.82 is: 574,736.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,309.28 : 1,080,147.35 = 383,269.82 : x
  2. Step 2: Convert to fraction form
    720,309.28/1,080,147.35 = 383,269.82/x
  3. Step 3: Cross multiply
    720,309.28x = 1,080,147.35 × 383,269.82
  4. Step 4: Simplify right side
    720,309.28x = 413,987,875,486.98
  5. Step 5: Solve for x
    x = 413,987,875,486.98/720,309.28
  6. Step 6: Final answer
    x = 574,736.28

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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.