Home / 778,414.29-1,074,211.25-420,718.29

Finding the Fourth Proportional to 778,414.29, 1,074,211.25 and 420,718.29

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Solution

The fourth proportional to 778,414.29, 1,074,211.25 and 420,718.29 is: 580,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,414.29 : 1,074,211.25 = 420,718.29 : x
  2. Step 2: Convert to fraction form
    778,414.29/1,074,211.25 = 420,718.29/x
  3. Step 3: Cross multiply
    778,414.29x = 1,074,211.25 × 420,718.29
  4. Step 4: Simplify right side
    778,414.29x = 451,940,318,095.17
  5. Step 5: Solve for x
    x = 451,940,318,095.17/778,414.29
  6. Step 6: Final answer
    x = 580,590.98

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1.5x scale

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.