Home / 810,260.70-1,214,648.01-311,248.86

Finding the Fourth Proportional to 810,260.70, 1,214,648.01 and 311,248.86

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Solution

The fourth proportional to 810,260.70, 1,214,648.01 and 311,248.86 is: 466,587.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,260.70 : 1,214,648.01 = 311,248.86 : x
  2. Step 2: Convert to fraction form
    810,260.70/1,214,648.01 = 311,248.86/x
  3. Step 3: Cross multiply
    810,260.70x = 1,214,648.01 × 311,248.86
  4. Step 4: Simplify right side
    810,260.70x = 378,057,808,413.77
  5. Step 5: Solve for x
    x = 378,057,808,413.77/810,260.70
  6. Step 6: Final answer
    x = 466,587.86

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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.