Home / 9,005,278,378.75-12,420,037,974.59-7,916,632,581.24

Finding the Fourth Proportional to 9,005,278,378.75, 12,420,037,974.59 and 7,916,632,581.24

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Solution

The fourth proportional to 9,005,278,378.75, 12,420,037,974.59 and 7,916,632,581.24 is: 10,918,582,763.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005,278,378.75 : 12,420,037,974.59 = 7,916,632,581.24 : x
  2. Step 2: Convert to fraction form
    9,005,278,378.75/12,420,037,974.59 = 7,916,632,581.24/x
  3. Step 3: Cross multiply
    9,005,278,378.75x = 12,420,037,974.59 × 7,916,632,581.24
  4. Step 4: Simplify right side
    9,005,278,378.75x = 98,324,877,289,869,344,768
  5. Step 5: Solve for x
    x = 98,324,877,289,869,344,768/9,005,278,378.75
  6. Step 6: Final answer
    x = 10,918,582,763.85

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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.