Home / 693,715.20-1,040,150.40-272,486.40

Finding the Fourth Proportional to 693,715.20, 1,040,150.40 and 272,486.40

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Solution

The fourth proportional to 693,715.20, 1,040,150.40 and 272,486.40 is: 408,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,715.20 : 1,040,150.40 = 272,486.40 : x
  2. Step 2: Convert to fraction form
    693,715.20/1,040,150.40 = 272,486.40/x
  3. Step 3: Cross multiply
    693,715.20x = 1,040,150.40 × 272,486.40
  4. Step 4: Simplify right side
    693,715.20x = 283,426,837,954.56
  5. Step 5: Solve for x
    x = 283,426,837,954.56/693,715.20
  6. Step 6: Final answer
    x = 408,563.68

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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.