Home / 1,278,416.88-1,917,126.95-479,262.38

Finding the Fourth Proportional to 1,278,416.88, 1,917,126.95 and 479,262.38

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Solution

The fourth proportional to 1,278,416.88, 1,917,126.95 and 479,262.38 is: 718,706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,416.88 : 1,917,126.95 = 479,262.38 : x
  2. Step 2: Convert to fraction form
    1,278,416.88/1,917,126.95 = 479,262.38/x
  3. Step 3: Cross multiply
    1,278,416.88x = 1,917,126.95 × 479,262.38
  4. Step 4: Simplify right side
    1,278,416.88x = 918,806,812,837.20
  5. Step 5: Solve for x
    x = 918,806,812,837.20/1,278,416.88
  6. Step 6: Final answer
    x = 718,706.73

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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.