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Finding the Fourth Proportional to 720,338.51, 1,080,694.56 and 383,101.86

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Solution

The fourth proportional to 720,338.51, 1,080,694.56 and 383,101.86 is: 574,752.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,338.51 : 1,080,694.56 = 383,101.86 : x
  2. Step 2: Convert to fraction form
    720,338.51/1,080,694.56 = 383,101.86/x
  3. Step 3: Cross multiply
    720,338.51x = 1,080,694.56 × 383,101.86
  4. Step 4: Simplify right side
    720,338.51x = 414,016,093,411.91
  5. Step 5: Solve for x
    x = 414,016,093,411.91/720,338.51
  6. Step 6: Final answer
    x = 574,752.13

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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.