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Finding the Fourth Proportional to 808,728.38, 1,116,042 and 446,174.80

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Solution

The fourth proportional to 808,728.38, 1,116,042 and 446,174.80 is: 615,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,728.38 : 1,116,042 = 446,174.80 : x
  2. Step 2: Convert to fraction form
    808,728.38/1,116,042 = 446,174.80/x
  3. Step 3: Cross multiply
    808,728.38x = 1,116,042 × 446,174.80
  4. Step 4: Simplify right side
    808,728.38x = 497,949,816,141.60
  5. Step 5: Solve for x
    x = 497,949,816,141.60/808,728.38
  6. Step 6: Final answer
    x = 615,719.48

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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.