Home / 1,279,023.02-1,918,724.08-425,816

Finding the Fourth Proportional to 1,279,023.02, 1,918,724.08 and 425,816

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Solution

The fourth proportional to 1,279,023.02, 1,918,724.08 and 425,816 is: 638,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,023.02 : 1,918,724.08 = 425,816 : x
  2. Step 2: Convert to fraction form
    1,279,023.02/1,918,724.08 = 425,816/x
  3. Step 3: Cross multiply
    1,279,023.02x = 1,918,724.08 × 425,816
  4. Step 4: Simplify right side
    1,279,023.02x = 817,023,412,849.28
  5. Step 5: Solve for x
    x = 817,023,412,849.28/1,279,023.02
  6. Step 6: Final answer
    x = 638,787.11

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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.