Home / 1,279,027.52-1,918,730.82-425,820.50

Finding the Fourth Proportional to 1,279,027.52, 1,918,730.82 and 425,820.50

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Solution

The fourth proportional to 1,279,027.52, 1,918,730.82 and 425,820.50 is: 638,793.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,027.52 : 1,918,730.82 = 425,820.50 : x
  2. Step 2: Convert to fraction form
    1,279,027.52/1,918,730.82 = 425,820.50/x
  3. Step 3: Cross multiply
    1,279,027.52x = 1,918,730.82 × 425,820.50
  4. Step 4: Simplify right side
    1,279,027.52x = 817,034,917,137.81
  5. Step 5: Solve for x
    x = 817,034,917,137.81/1,279,027.52
  6. Step 6: Final answer
    x = 638,793.85

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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.