Home / 521,531.10-783,247.05-456,212.70

Finding the Fourth Proportional to 521,531.10, 783,247.05 and 456,212.70

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Solution

The fourth proportional to 521,531.10, 783,247.05 and 456,212.70 is: 685,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,531.10 : 783,247.05 = 456,212.70 : x
  2. Step 2: Convert to fraction form
    521,531.10/783,247.05 = 456,212.70/x
  3. Step 3: Cross multiply
    521,531.10x = 783,247.05 × 456,212.70
  4. Step 4: Simplify right side
    521,531.10x = 357,327,251,447.54
  5. Step 5: Solve for x
    x = 357,327,251,447.54/521,531.10
  6. Step 6: Final answer
    x = 685,150.42

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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.