Home / 1,279,028.52-1,918,732.32-425,821.50

Finding the Fourth Proportional to 1,279,028.52, 1,918,732.32 and 425,821.50

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Solution

The fourth proportional to 1,279,028.52, 1,918,732.32 and 425,821.50 is: 638,795.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,028.52 : 1,918,732.32 = 425,821.50 : x
  2. Step 2: Convert to fraction form
    1,279,028.52/1,918,732.32 = 425,821.50/x
  3. Step 3: Cross multiply
    1,279,028.52x = 1,918,732.32 × 425,821.50
  4. Step 4: Simplify right side
    1,279,028.52x = 817,037,474,600.88
  5. Step 5: Solve for x
    x = 817,037,474,600.88/1,279,028.52
  6. Step 6: Final answer
    x = 638,795.35

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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.