Home / 1,438,489.82-2,156,018.83-668,948.72

Finding the Fourth Proportional to 1,438,489.82, 2,156,018.83 and 668,948.72

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Solution

The fourth proportional to 1,438,489.82, 2,156,018.83 and 668,948.72 is: 1,002,625.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,489.82 : 2,156,018.83 = 668,948.72 : x
  2. Step 2: Convert to fraction form
    1,438,489.82/2,156,018.83 = 668,948.72/x
  3. Step 3: Cross multiply
    1,438,489.82x = 2,156,018.83 × 668,948.72
  4. Step 4: Simplify right side
    1,438,489.82x = 1,442,266,036,624.40
  5. Step 5: Solve for x
    x = 1,442,266,036,624.40/1,438,489.82
  6. Step 6: Final answer
    x = 1,002,625.13

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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.