Home / 1,278,421.88-1,917,134.47-479,267.38

Finding the Fourth Proportional to 1,278,421.88, 1,917,134.47 and 479,267.38

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Solution

The fourth proportional to 1,278,421.88, 1,917,134.47 and 479,267.38 is: 718,714.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,421.88 : 1,917,134.47 = 479,267.38 : x
  2. Step 2: Convert to fraction form
    1,278,421.88/1,917,134.47 = 479,267.38/x
  3. Step 3: Cross multiply
    1,278,421.88x = 1,917,134.47 × 479,267.38
  4. Step 4: Simplify right side
    1,278,421.88x = 918,820,002,562.58
  5. Step 5: Solve for x
    x = 918,820,002,562.58/1,278,421.88
  6. Step 6: Final answer
    x = 718,714.23

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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.