Home / 1,278,403.19-1,917,106.44-479,248.69

Finding the Fourth Proportional to 1,278,403.19, 1,917,106.44 and 479,248.69

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Solution

The fourth proportional to 1,278,403.19, 1,917,106.44 and 479,248.69 is: 718,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,403.19 : 1,917,106.44 = 479,248.69 : x
  2. Step 2: Convert to fraction form
    1,278,403.19/1,917,106.44 = 479,248.69/x
  3. Step 3: Cross multiply
    1,278,403.19x = 1,917,106.44 × 479,248.69
  4. Step 4: Simplify right side
    1,278,403.19x = 918,770,743,370.62
  5. Step 5: Solve for x
    x = 918,770,743,370.62/1,278,403.19
  6. Step 6: Final answer
    x = 718,686.21

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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.