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Finding the Fourth Proportional to 720,339.90, 1,079,758.98 and 270,751.02

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Solution

The fourth proportional to 720,339.90, 1,079,758.98 and 270,751.02 is: 405,844.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,339.90 : 1,079,758.98 = 270,751.02 : x
  2. Step 2: Convert to fraction form
    720,339.90/1,079,758.98 = 270,751.02/x
  3. Step 3: Cross multiply
    720,339.90x = 1,079,758.98 × 270,751.02
  4. Step 4: Simplify right side
    720,339.90x = 292,345,845,189.16
  5. Step 5: Solve for x
    x = 292,345,845,189.16/720,339.90
  6. Step 6: Final answer
    x = 405,844.30

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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.