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Finding the Fourth Proportional to 617,811.20, 926,803.20 and 262,822.40

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Solution

The fourth proportional to 617,811.20, 926,803.20 and 262,822.40 is: 394,270.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,811.20 : 926,803.20 = 262,822.40 : x
  2. Step 2: Convert to fraction form
    617,811.20/926,803.20 = 262,822.40/x
  3. Step 3: Cross multiply
    617,811.20x = 926,803.20 × 262,822.40
  4. Step 4: Simplify right side
    617,811.20x = 243,584,641,351.68
  5. Step 5: Solve for x
    x = 243,584,641,351.68/617,811.20
  6. Step 6: Final answer
    x = 394,270.36

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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.