Home / 645,940.20-967,160.70-505,972.20

Finding the Fourth Proportional to 645,940.20, 967,160.70 and 505,972.20

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Solution

The fourth proportional to 645,940.20, 967,160.70 and 505,972.20 is: 757,587.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,940.20 : 967,160.70 = 505,972.20 : x
  2. Step 2: Convert to fraction form
    645,940.20/967,160.70 = 505,972.20/x
  3. Step 3: Cross multiply
    645,940.20x = 967,160.70 × 505,972.20
  4. Step 4: Simplify right side
    645,940.20x = 489,356,427,132.54
  5. Step 5: Solve for x
    x = 489,356,427,132.54/645,940.20
  6. Step 6: Final answer
    x = 757,587.82

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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.