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Finding the Fourth Proportional to 699,900.54, 966,020.76 and 428,194.95

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Solution

The fourth proportional to 699,900.54, 966,020.76 and 428,194.95 is: 591,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,900.54 : 966,020.76 = 428,194.95 : x
  2. Step 2: Convert to fraction form
    699,900.54/966,020.76 = 428,194.95/x
  3. Step 3: Cross multiply
    699,900.54x = 966,020.76 × 428,194.95
  4. Step 4: Simplify right side
    699,900.54x = 413,645,211,027.16
  5. Step 5: Solve for x
    x = 413,645,211,027.16/699,900.54
  6. Step 6: Final answer
    x = 591,005.70

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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.