Home / 778,170.96-1,073,875.91-420,474.96

Finding the Fourth Proportional to 778,170.96, 1,073,875.91 and 420,474.96

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Solution

The fourth proportional to 778,170.96, 1,073,875.91 and 420,474.96 is: 580,255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,170.96 : 1,073,875.91 = 420,474.96 : x
  2. Step 2: Convert to fraction form
    778,170.96/1,073,875.91 = 420,474.96/x
  3. Step 3: Cross multiply
    778,170.96x = 1,073,875.91 × 420,474.96
  4. Step 4: Simplify right side
    778,170.96x = 451,537,928,199.84
  5. Step 5: Solve for x
    x = 451,537,928,199.84/778,170.96
  6. Step 6: Final answer
    x = 580,255.43

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Double scale
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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.