Home / 1,279,748.64-1,919,425.68-426,835.20

Finding the Fourth Proportional to 1,279,748.64, 1,919,425.68 and 426,835.20

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Solution

The fourth proportional to 1,279,748.64, 1,919,425.68 and 426,835.20 is: 640,187.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,748.64 : 1,919,425.68 = 426,835.20 : x
  2. Step 2: Convert to fraction form
    1,279,748.64/1,919,425.68 = 426,835.20/x
  3. Step 3: Cross multiply
    1,279,748.64x = 1,919,425.68 × 426,835.20
  4. Step 4: Simplify right side
    1,279,748.64x = 819,278,444,007.94
  5. Step 5: Solve for x
    x = 819,278,444,007.94/1,279,748.64
  6. Step 6: Final answer
    x = 640,187.00

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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.