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Finding the Fourth Proportional to 404,512.60, 606,768.90 and 278,541.40

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Solution

The fourth proportional to 404,512.60, 606,768.90 and 278,541.40 is: 417,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,512.60 : 606,768.90 = 278,541.40 : x
  2. Step 2: Convert to fraction form
    404,512.60/606,768.90 = 278,541.40/x
  3. Step 3: Cross multiply
    404,512.60x = 606,768.90 × 278,541.40
  4. Step 4: Simplify right side
    404,512.60x = 169,010,258,882.46
  5. Step 5: Solve for x
    x = 169,010,258,882.46/404,512.60
  6. Step 6: Final answer
    x = 417,812.10

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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.