Home / 7,158,743-9,879,066.96-3,939,479

Finding the Fourth Proportional to 7,158,743, 9,879,066.96 and 3,939,479

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Solution

The fourth proportional to 7,158,743, 9,879,066.96 and 3,939,479 is: 5,436,481.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,743 : 9,879,066.96 = 3,939,479 : x
  2. Step 2: Convert to fraction form
    7,158,743/9,879,066.96 = 3,939,479/x
  3. Step 3: Cross multiply
    7,158,743x = 9,879,066.96 × 3,939,479
  4. Step 4: Simplify right side
    7,158,743x = 38,918,376,828,513.84
  5. Step 5: Solve for x
    x = 38,918,376,828,513.84/7,158,743
  6. Step 6: Final answer
    x = 5,436,481.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.