Home / 1,368,018.95-2,052,248.97-421,388.78

Finding the Fourth Proportional to 1,368,018.95, 2,052,248.97 and 421,388.78

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Solution

The fourth proportional to 1,368,018.95, 2,052,248.97 and 421,388.78 is: 632,151.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,018.95 : 2,052,248.97 = 421,388.78 : x
  2. Step 2: Convert to fraction form
    1,368,018.95/2,052,248.97 = 421,388.78/x
  3. Step 3: Cross multiply
    1,368,018.95x = 2,052,248.97 × 421,388.78
  4. Step 4: Simplify right side
    1,368,018.95x = 864,794,689,724.56
  5. Step 5: Solve for x
    x = 864,794,689,724.56/1,368,018.95
  6. Step 6: Final answer
    x = 632,151.10

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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.