Home / 778,601.70-1,167,902.55-478,107.90

Finding the Fourth Proportional to 778,601.70, 1,167,902.55 and 478,107.90

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Solution

The fourth proportional to 778,601.70, 1,167,902.55 and 478,107.90 is: 717,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,601.70 : 1,167,902.55 = 478,107.90 : x
  2. Step 2: Convert to fraction form
    778,601.70/1,167,902.55 = 478,107.90/x
  3. Step 3: Cross multiply
    778,601.70x = 1,167,902.55 × 478,107.90
  4. Step 4: Simplify right side
    778,601.70x = 558,383,435,585.15
  5. Step 5: Solve for x
    x = 558,383,435,585.15/778,601.70
  6. Step 6: Final answer
    x = 717,161.85

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1.5x scale

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.