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Finding the Fourth Proportional to 557,165.97, 768,847.02 and 315,393.12

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Solution

The fourth proportional to 557,165.97, 768,847.02 and 315,393.12 is: 435,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,165.97 : 768,847.02 = 315,393.12 : x
  2. Step 2: Convert to fraction form
    557,165.97/768,847.02 = 315,393.12/x
  3. Step 3: Cross multiply
    557,165.97x = 768,847.02 × 315,393.12
  4. Step 4: Simplify right side
    557,165.97x = 242,489,060,440.50
  5. Step 5: Solve for x
    x = 242,489,060,440.50/557,165.97
  6. Step 6: Final answer
    x = 435,218.72

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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.