Home / 880,770.36-1,215,469.28-478,362.36

Finding the Fourth Proportional to 880,770.36, 1,215,469.28 and 478,362.36

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Solution

The fourth proportional to 880,770.36, 1,215,469.28 and 478,362.36 is: 660,143.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,770.36 : 1,215,469.28 = 478,362.36 : x
  2. Step 2: Convert to fraction form
    880,770.36/1,215,469.28 = 478,362.36/x
  3. Step 3: Cross multiply
    880,770.36x = 1,215,469.28 × 478,362.36
  4. Step 4: Simplify right side
    880,770.36x = 581,434,753,288.30
  5. Step 5: Solve for x
    x = 581,434,753,288.30/880,770.36
  6. Step 6: Final answer
    x = 660,143.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.