Home / 1,078,286.80-1,617,153.30-319,948.90

Finding the Fourth Proportional to 1,078,286.80, 1,617,153.30 and 319,948.90

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Solution

The fourth proportional to 1,078,286.80, 1,617,153.30 and 319,948.90 is: 479,841.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,286.80 : 1,617,153.30 = 319,948.90 : x
  2. Step 2: Convert to fraction form
    1,078,286.80/1,617,153.30 = 319,948.90/x
  3. Step 3: Cross multiply
    1,078,286.80x = 1,617,153.30 × 319,948.90
  4. Step 4: Simplify right side
    1,078,286.80x = 517,406,419,466.37
  5. Step 5: Solve for x
    x = 517,406,419,466.37/1,078,286.80
  6. Step 6: Final answer
    x = 479,841.19

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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.