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Finding the Fourth Proportional to 889,963.45, 1,335,007.45 and 440,563.66

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Solution

The fourth proportional to 889,963.45, 1,335,007.45 and 440,563.66 is: 660,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,963.45 : 1,335,007.45 = 440,563.66 : x
  2. Step 2: Convert to fraction form
    889,963.45/1,335,007.45 = 440,563.66/x
  3. Step 3: Cross multiply
    889,963.45x = 1,335,007.45 × 440,563.66
  4. Step 4: Simplify right side
    889,963.45x = 588,155,768,299.27
  5. Step 5: Solve for x
    x = 588,155,768,299.27/889,963.45
  6. Step 6: Final answer
    x = 660,876.32

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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.