Home / 817,988.49-1,227,339.95-285,891.39

Finding the Fourth Proportional to 817,988.49, 1,227,339.95 and 285,891.39

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Solution

The fourth proportional to 817,988.49, 1,227,339.95 and 285,891.39 is: 428,961.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,988.49 : 1,227,339.95 = 285,891.39 : x
  2. Step 2: Convert to fraction form
    817,988.49/1,227,339.95 = 285,891.39/x
  3. Step 3: Cross multiply
    817,988.49x = 1,227,339.95 × 285,891.39
  4. Step 4: Simplify right side
    817,988.49x = 350,885,922,878.57
  5. Step 5: Solve for x
    x = 350,885,922,878.57/817,988.49
  6. Step 6: Final answer
    x = 428,961.93

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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.