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Finding the Fourth Proportional to 1,664,921.40, 2,297,591.54 and 900,974.92

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Solution

The fourth proportional to 1,664,921.40, 2,297,591.54 and 900,974.92 is: 1,243,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,921.40 : 2,297,591.54 = 900,974.92 : x
  2. Step 2: Convert to fraction form
    1,664,921.40/2,297,591.54 = 900,974.92/x
  3. Step 3: Cross multiply
    1,664,921.40x = 2,297,591.54 × 900,974.92
  4. Step 4: Simplify right side
    1,664,921.40x = 2,070,072,353,944.18
  5. Step 5: Solve for x
    x = 2,070,072,353,944.18/1,664,921.40
  6. Step 6: Final answer
    x = 1,243,345.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.