Home / 518,822-715,974.36-280,358

Finding the Fourth Proportional to 518,822, 715,974.36 and 280,358

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Solution

The fourth proportional to 518,822, 715,974.36 and 280,358 is: 386,894.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,822 : 715,974.36 = 280,358 : x
  2. Step 2: Convert to fraction form
    518,822/715,974.36 = 280,358/x
  3. Step 3: Cross multiply
    518,822x = 715,974.36 × 280,358
  4. Step 4: Simplify right side
    518,822x = 200,729,139,620.88
  5. Step 5: Solve for x
    x = 200,729,139,620.88/518,822
  6. Step 6: Final answer
    x = 386,894.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.