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Finding the Fourth Proportional to 617,963.20, 926,426.40 and 322,475.20

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Solution

The fourth proportional to 617,963.20, 926,426.40 and 322,475.20 is: 483,442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,963.20 : 926,426.40 = 322,475.20 : x
  2. Step 2: Convert to fraction form
    617,963.20/926,426.40 = 322,475.20/x
  3. Step 3: Cross multiply
    617,963.20x = 926,426.40 × 322,475.20
  4. Step 4: Simplify right side
    617,963.20x = 298,749,538,625.28
  5. Step 5: Solve for x
    x = 298,749,538,625.28/617,963.20
  6. Step 6: Final answer
    x = 483,442.28

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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.