Home / 690,640.16-1,035,477.72-306,179.92

Finding the Fourth Proportional to 690,640.16, 1,035,477.72 and 306,179.92

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Solution

The fourth proportional to 690,640.16, 1,035,477.72 and 306,179.92 is: 459,055.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,640.16 : 1,035,477.72 = 306,179.92 : x
  2. Step 2: Convert to fraction form
    690,640.16/1,035,477.72 = 306,179.92/x
  3. Step 3: Cross multiply
    690,640.16x = 1,035,477.72 × 306,179.92
  4. Step 4: Simplify right side
    690,640.16x = 317,042,485,471.38
  5. Step 5: Solve for x
    x = 317,042,485,471.38/690,640.16
  6. Step 6: Final answer
    x = 459,055.97

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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.