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Finding the Fourth Proportional to 881,900.10, 1,320,881.85 and 681,570.90

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Solution

The fourth proportional to 881,900.10, 1,320,881.85 and 681,570.90 is: 1,020,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,900.10 : 1,320,881.85 = 681,570.90 : x
  2. Step 2: Convert to fraction form
    881,900.10/1,320,881.85 = 681,570.90/x
  3. Step 3: Cross multiply
    881,900.10x = 1,320,881.85 × 681,570.90
  4. Step 4: Simplify right side
    881,900.10x = 900,274,631,298.17
  5. Step 5: Solve for x
    x = 900,274,631,298.17/881,900.10
  6. Step 6: Final answer
    x = 1,020,835.16

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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.