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Finding the Fourth Proportional to 720,504.72, 1,080,390.15 and 240,560.28

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Solution

The fourth proportional to 720,504.72, 1,080,390.15 and 240,560.28 is: 360,717.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,504.72 : 1,080,390.15 = 240,560.28 : x
  2. Step 2: Convert to fraction form
    720,504.72/1,080,390.15 = 240,560.28/x
  3. Step 3: Cross multiply
    720,504.72x = 1,080,390.15 × 240,560.28
  4. Step 4: Simplify right side
    720,504.72x = 259,898,956,993.24
  5. Step 5: Solve for x
    x = 259,898,956,993.24/720,504.72
  6. Step 6: Final answer
    x = 360,717.91

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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.