Home / 669,047.78-922,865.99-396,923.01

Finding the Fourth Proportional to 669,047.78, 922,865.99 and 396,923.01

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Solution

The fourth proportional to 669,047.78, 922,865.99 and 396,923.01 is: 547,504.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,047.78 : 922,865.99 = 396,923.01 : x
  2. Step 2: Convert to fraction form
    669,047.78/922,865.99 = 396,923.01/x
  3. Step 3: Cross multiply
    669,047.78x = 922,865.99 × 396,923.01
  4. Step 4: Simplify right side
    669,047.78x = 366,306,744,592.82
  5. Step 5: Solve for x
    x = 366,306,744,592.82/669,047.78
  6. Step 6: Final answer
    x = 547,504.62

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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.