Home / 1,278,453.12-1,917,181.44-479,298.72

Finding the Fourth Proportional to 1,278,453.12, 1,917,181.44 and 479,298.72

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Solution

The fourth proportional to 1,278,453.12, 1,917,181.44 and 479,298.72 is: 718,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,453.12 : 1,917,181.44 = 479,298.72 : x
  2. Step 2: Convert to fraction form
    1,278,453.12/1,917,181.44 = 479,298.72/x
  3. Step 3: Cross multiply
    1,278,453.12x = 1,917,181.44 × 479,298.72
  4. Step 4: Simplify right side
    1,278,453.12x = 918,902,610,199.76
  5. Step 5: Solve for x
    x = 918,902,610,199.76/1,278,453.12
  6. Step 6: Final answer
    x = 718,761.29

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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.