Home / 5,172,279.57-7,760,191.77-1,978,319.16

Finding the Fourth Proportional to 5,172,279.57, 7,760,191.77 and 1,978,319.16

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Solution

The fourth proportional to 5,172,279.57, 7,760,191.77 and 1,978,319.16 is: 2,968,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172,279.57 : 7,760,191.77 = 1,978,319.16 : x
  2. Step 2: Convert to fraction form
    5,172,279.57/7,760,191.77 = 1,978,319.16/x
  3. Step 3: Cross multiply
    5,172,279.57x = 7,760,191.77 × 1,978,319.16
  4. Step 4: Simplify right side
    5,172,279.57x = 15,352,136,063,865.31
  5. Step 5: Solve for x
    x = 15,352,136,063,865.31/5,172,279.57
  6. Step 6: Final answer
    x = 2,968,156.66

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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.