Home / 813,920.38-1,221,055.52-274,230.29

Finding the Fourth Proportional to 813,920.38, 1,221,055.52 and 274,230.29

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Solution

The fourth proportional to 813,920.38, 1,221,055.52 and 274,230.29 is: 411,404.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,920.38 : 1,221,055.52 = 274,230.29 : x
  2. Step 2: Convert to fraction form
    813,920.38/1,221,055.52 = 274,230.29/x
  3. Step 3: Cross multiply
    813,920.38x = 1,221,055.52 × 274,230.29
  4. Step 4: Simplify right side
    813,920.38x = 334,850,411,037.19
  5. Step 5: Solve for x
    x = 334,850,411,037.19/813,920.38
  6. Step 6: Final answer
    x = 411,404.38

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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.