Home / 1,279,021.02-1,918,721.08-425,814

Finding the Fourth Proportional to 1,279,021.02, 1,918,721.08 and 425,814

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Solution

The fourth proportional to 1,279,021.02, 1,918,721.08 and 425,814 is: 638,784.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,021.02 : 1,918,721.08 = 425,814 : x
  2. Step 2: Convert to fraction form
    1,279,021.02/1,918,721.08 = 425,814/x
  3. Step 3: Cross multiply
    1,279,021.02x = 1,918,721.08 × 425,814
  4. Step 4: Simplify right side
    1,279,021.02x = 817,018,297,959.12
  5. Step 5: Solve for x
    x = 817,018,297,959.12/1,279,021.02
  6. Step 6: Final answer
    x = 638,784.11

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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.