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Finding the Fourth Proportional to 557,891.70, 770,088 and 331,534.50

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Solution

The fourth proportional to 557,891.70, 770,088 and 331,534.50 is: 457,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,891.70 : 770,088 = 331,534.50 : x
  2. Step 2: Convert to fraction form
    557,891.70/770,088 = 331,534.50/x
  3. Step 3: Cross multiply
    557,891.70x = 770,088 × 331,534.50
  4. Step 4: Simplify right side
    557,891.70x = 255,310,740,036
  5. Step 5: Solve for x
    x = 255,310,740,036/557,891.70
  6. Step 6: Final answer
    x = 457,634.95

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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.