Home / 12,478,719.80-18,718,079.70-4,391,631.20

Finding the Fourth Proportional to 12,478,719.80, 18,718,079.70 and 4,391,631.20

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Solution

The fourth proportional to 12,478,719.80, 18,718,079.70 and 4,391,631.20 is: 6,587,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,719.80 : 18,718,079.70 = 4,391,631.20 : x
  2. Step 2: Convert to fraction form
    12,478,719.80/18,718,079.70 = 4,391,631.20/x
  3. Step 3: Cross multiply
    12,478,719.80x = 18,718,079.70 × 4,391,631.20
  4. Step 4: Simplify right side
    12,478,719.80x = 82,202,902,814,606.64
  5. Step 5: Solve for x
    x = 82,202,902,814,606.64/12,478,719.80
  6. Step 6: Final answer
    x = 6,587,446.80

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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.