Home / 678,499.70-1,018,138.35-258,077.30

Finding the Fourth Proportional to 678,499.70, 1,018,138.35 and 258,077.30

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Solution

The fourth proportional to 678,499.70, 1,018,138.35 and 258,077.30 is: 387,263.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,499.70 : 1,018,138.35 = 258,077.30 : x
  2. Step 2: Convert to fraction form
    678,499.70/1,018,138.35 = 258,077.30/x
  3. Step 3: Cross multiply
    678,499.70x = 1,018,138.35 × 258,077.30
  4. Step 4: Simplify right side
    678,499.70x = 262,758,396,394.46
  5. Step 5: Solve for x
    x = 262,758,396,394.46/678,499.70
  6. Step 6: Final answer
    x = 387,263.84

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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.