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Finding the Fourth Proportional to 957,642, 1,321,549.92 and 527,912.64

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Solution

The fourth proportional to 957,642, 1,321,549.92 and 527,912.64 is: 728,521.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    957,642 : 1,321,549.92 = 527,912.64 : x
  2. Step 2: Convert to fraction form
    957,642/1,321,549.92 = 527,912.64/x
  3. Step 3: Cross multiply
    957,642x = 1,321,549.92 × 527,912.64
  4. Step 4: Simplify right side
    957,642x = 697,662,907,158.99
  5. Step 5: Solve for x
    x = 697,662,907,158.99/957,642
  6. Step 6: Final answer
    x = 728,521.63

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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.