Home / 3,178,245.60-4,767,368.40-1,981,519.20

Finding the Fourth Proportional to 3,178,245.60, 4,767,368.40 and 1,981,519.20

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Solution

The fourth proportional to 3,178,245.60, 4,767,368.40 and 1,981,519.20 is: 2,972,278.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,245.60 : 4,767,368.40 = 1,981,519.20 : x
  2. Step 2: Convert to fraction form
    3,178,245.60/4,767,368.40 = 1,981,519.20/x
  3. Step 3: Cross multiply
    3,178,245.60x = 4,767,368.40 × 1,981,519.20
  4. Step 4: Simplify right side
    3,178,245.60x = 9,446,632,018,073.28
  5. Step 5: Solve for x
    x = 9,446,632,018,073.28/3,178,245.60
  6. Step 6: Final answer
    x = 2,972,278.80

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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.