Home / 820,435.50-1,132,257.78-457,929.90

Finding the Fourth Proportional to 820,435.50, 1,132,257.78 and 457,929.90

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Solution

The fourth proportional to 820,435.50, 1,132,257.78 and 457,929.90 is: 631,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,435.50 : 1,132,257.78 = 457,929.90 : x
  2. Step 2: Convert to fraction form
    820,435.50/1,132,257.78 = 457,929.90/x
  3. Step 3: Cross multiply
    820,435.50x = 1,132,257.78 × 457,929.90
  4. Step 4: Simplify right side
    820,435.50x = 518,494,691,969.62
  5. Step 5: Solve for x
    x = 518,494,691,969.62/820,435.50
  6. Step 6: Final answer
    x = 631,974.96

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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.