Home / 1,320,624.20-1,980,353.10-521,640.20

Finding the Fourth Proportional to 1,320,624.20, 1,980,353.10 and 521,640.20

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Solution

The fourth proportional to 1,320,624.20, 1,980,353.10 and 521,640.20 is: 782,229.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,624.20 : 1,980,353.10 = 521,640.20 : x
  2. Step 2: Convert to fraction form
    1,320,624.20/1,980,353.10 = 521,640.20/x
  3. Step 3: Cross multiply
    1,320,624.20x = 1,980,353.10 × 521,640.20
  4. Step 4: Simplify right side
    1,320,624.20x = 1,033,031,787,154.62
  5. Step 5: Solve for x
    x = 1,033,031,787,154.62/1,320,624.20
  6. Step 6: Final answer
    x = 782,229.94

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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.