Home / 855,177.70-1,282,766.55-455,612.80

Finding the Fourth Proportional to 855,177.70, 1,282,766.55 and 455,612.80

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Solution

The fourth proportional to 855,177.70, 1,282,766.55 and 455,612.80 is: 683,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,177.70 : 1,282,766.55 = 455,612.80 : x
  2. Step 2: Convert to fraction form
    855,177.70/1,282,766.55 = 455,612.80/x
  3. Step 3: Cross multiply
    855,177.70x = 1,282,766.55 × 455,612.80
  4. Step 4: Simplify right side
    855,177.70x = 584,444,859,591.84
  5. Step 5: Solve for x
    x = 584,444,859,591.84/855,177.70
  6. Step 6: Final answer
    x = 683,419.20

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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.