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Finding the Fourth Proportional to 663,043.28, 994,858.95 and 347,425.16

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Solution

The fourth proportional to 663,043.28, 994,858.95 and 347,425.16 is: 521,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,043.28 : 994,858.95 = 347,425.16 : x
  2. Step 2: Convert to fraction form
    663,043.28/994,858.95 = 347,425.16/x
  3. Step 3: Cross multiply
    663,043.28x = 994,858.95 × 347,425.16
  4. Step 4: Simplify right side
    663,043.28x = 345,639,029,881.18
  5. Step 5: Solve for x
    x = 345,639,029,881.18/663,043.28
  6. Step 6: Final answer
    x = 521,291.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.