Home / 820,948.18-1,231,426.66-538,427.78

Finding the Fourth Proportional to 820,948.18, 1,231,426.66 and 538,427.78

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Solution

The fourth proportional to 820,948.18, 1,231,426.66 and 538,427.78 is: 807,644.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,948.18 : 1,231,426.66 = 538,427.78 : x
  2. Step 2: Convert to fraction form
    820,948.18/1,231,426.66 = 538,427.78/x
  3. Step 3: Cross multiply
    820,948.18x = 1,231,426.66 × 538,427.78
  4. Step 4: Simplify right side
    820,948.18x = 663,034,326,528.22
  5. Step 5: Solve for x
    x = 663,034,326,528.22/820,948.18
  6. Step 6: Final answer
    x = 807,644.56

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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.