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Finding the Fourth Proportional to 417,671.64, 629,592.48 and 393,287.40

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Solution

The fourth proportional to 417,671.64, 629,592.48 and 393,287.40 is: 592,836.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,671.64 : 629,592.48 = 393,287.40 : x
  2. Step 2: Convert to fraction form
    417,671.64/629,592.48 = 393,287.40/x
  3. Step 3: Cross multiply
    417,671.64x = 629,592.48 × 393,287.40
  4. Step 4: Simplify right side
    417,671.64x = 247,610,789,518.75
  5. Step 5: Solve for x
    x = 247,610,789,518.75/417,671.64
  6. Step 6: Final answer
    x = 592,836.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.