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Finding the Fourth Proportional to 617,563.20, 926,431.20 and 262,574.40

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Solution

The fourth proportional to 617,563.20, 926,431.20 and 262,574.40 is: 393,898.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,563.20 : 926,431.20 = 262,574.40 : x
  2. Step 2: Convert to fraction form
    617,563.20/926,431.20 = 262,574.40/x
  3. Step 3: Cross multiply
    617,563.20x = 926,431.20 × 262,574.40
  4. Step 4: Simplify right side
    617,563.20x = 243,257,116,481.28
  5. Step 5: Solve for x
    x = 243,257,116,481.28/617,563.20
  6. Step 6: Final answer
    x = 393,898.34

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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.