Home / 820,135.80-1,230,203.70-442,222.20

Finding the Fourth Proportional to 820,135.80, 1,230,203.70 and 442,222.20

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Solution

The fourth proportional to 820,135.80, 1,230,203.70 and 442,222.20 is: 663,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,135.80 : 1,230,203.70 = 442,222.20 : x
  2. Step 2: Convert to fraction form
    820,135.80/1,230,203.70 = 442,222.20/x
  3. Step 3: Cross multiply
    820,135.80x = 1,230,203.70 × 442,222.20
  4. Step 4: Simplify right side
    820,135.80x = 544,023,386,662.14
  5. Step 5: Solve for x
    x = 544,023,386,662.14/820,135.80
  6. Step 6: Final answer
    x = 663,333.30

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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.