Home / 1,278,499.78-1,917,753.30-331,878.70

Finding the Fourth Proportional to 1,278,499.78, 1,917,753.30 and 331,878.70

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Solution

The fourth proportional to 1,278,499.78, 1,917,753.30 and 331,878.70 is: 497,818.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,499.78 : 1,917,753.30 = 331,878.70 : x
  2. Step 2: Convert to fraction form
    1,278,499.78/1,917,753.30 = 331,878.70/x
  3. Step 3: Cross multiply
    1,278,499.78x = 1,917,753.30 × 331,878.70
  4. Step 4: Simplify right side
    1,278,499.78x = 636,461,472,124.71
  5. Step 5: Solve for x
    x = 636,461,472,124.71/1,278,499.78
  6. Step 6: Final answer
    x = 497,818.99

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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.