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Finding the Fourth Proportional to 690,168.36, 952,439.94 and 380,105.76

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Solution

The fourth proportional to 690,168.36, 952,439.94 and 380,105.76 is: 524,550.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,168.36 : 952,439.94 = 380,105.76 : x
  2. Step 2: Convert to fraction form
    690,168.36/952,439.94 = 380,105.76/x
  3. Step 3: Cross multiply
    690,168.36x = 952,439.94 × 380,105.76
  4. Step 4: Simplify right side
    690,168.36x = 362,027,907,248.05
  5. Step 5: Solve for x
    x = 362,027,907,248.05/690,168.36
  6. Step 6: Final answer
    x = 524,550.14

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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.