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Finding the Fourth Proportional to 550,276.10, 768,811.90 and 550,276.10

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Solution

The fourth proportional to 550,276.10, 768,811.90 and 550,276.10 is: 768,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,276.10 : 768,811.90 = 550,276.10 : x
  2. Step 2: Convert to fraction form
    550,276.10/768,811.90 = 550,276.10/x
  3. Step 3: Cross multiply
    550,276.10x = 768,811.90 × 550,276.10
  4. Step 4: Simplify right side
    550,276.10x = 423,058,813,965.59
  5. Step 5: Solve for x
    x = 423,058,813,965.59/550,276.10
  6. Step 6: Final answer
    x = 768,811.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.