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Finding the Fourth Proportional to 885,977.20, 1,328,965.80 and 880,728.40

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Solution

The fourth proportional to 885,977.20, 1,328,965.80 and 880,728.40 is: 1,321,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,977.20 : 1,328,965.80 = 880,728.40 : x
  2. Step 2: Convert to fraction form
    885,977.20/1,328,965.80 = 880,728.40/x
  3. Step 3: Cross multiply
    885,977.20x = 1,328,965.80 × 880,728.40
  4. Step 4: Simplify right side
    885,977.20x = 1,170,457,922,688.72
  5. Step 5: Solve for x
    x = 1,170,457,922,688.72/885,977.20
  6. Step 6: Final answer
    x = 1,321,092.60

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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.