Home / 1,279,022.02-1,918,722.58-425,815

Finding the Fourth Proportional to 1,279,022.02, 1,918,722.58 and 425,815

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Solution

The fourth proportional to 1,279,022.02, 1,918,722.58 and 425,815 is: 638,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,022.02 : 1,918,722.58 = 425,815 : x
  2. Step 2: Convert to fraction form
    1,279,022.02/1,918,722.58 = 425,815/x
  3. Step 3: Cross multiply
    1,279,022.02x = 1,918,722.58 × 425,815
  4. Step 4: Simplify right side
    1,279,022.02x = 817,020,855,402.70
  5. Step 5: Solve for x
    x = 817,020,855,402.70/1,279,022.02
  6. Step 6: Final answer
    x = 638,785.61

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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.