Home / 412,974.78-619,330.98-280,705.02

Finding the Fourth Proportional to 412,974.78, 619,330.98 and 280,705.02

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Solution

The fourth proportional to 412,974.78, 619,330.98 and 280,705.02 is: 420,968.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,974.78 : 619,330.98 = 280,705.02 : x
  2. Step 2: Convert to fraction form
    412,974.78/619,330.98 = 280,705.02/x
  3. Step 3: Cross multiply
    412,974.78x = 619,330.98 × 280,705.02
  4. Step 4: Simplify right side
    412,974.78x = 173,849,315,127.52
  5. Step 5: Solve for x
    x = 173,849,315,127.52/412,974.78
  6. Step 6: Final answer
    x = 420,968.36

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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.