Home / 778,105.64-1,074,053.67-455,920.04

Finding the Fourth Proportional to 778,105.64, 1,074,053.67 and 455,920.04

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Solution

The fourth proportional to 778,105.64, 1,074,053.67 and 455,920.04 is: 629,326.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,105.64 : 1,074,053.67 = 455,920.04 : x
  2. Step 2: Convert to fraction form
    778,105.64/1,074,053.67 = 455,920.04/x
  3. Step 3: Cross multiply
    778,105.64x = 1,074,053.67 × 455,920.04
  4. Step 4: Simplify right side
    778,105.64x = 489,682,592,188.55
  5. Step 5: Solve for x
    x = 489,682,592,188.55/778,105.64
  6. Step 6: Final answer
    x = 629,326.62

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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.