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Finding the Fourth Proportional to 1,664,985.92, 2,297,687.81 and 901,039.55

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Solution

The fourth proportional to 1,664,985.92, 2,297,687.81 and 901,039.55 is: 1,243,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,985.92 : 2,297,687.81 = 901,039.55 : x
  2. Step 2: Convert to fraction form
    1,664,985.92/2,297,687.81 = 901,039.55/x
  3. Step 3: Cross multiply
    1,664,985.92x = 2,297,687.81 × 901,039.55
  4. Step 4: Simplify right side
    1,664,985.92x = 2,070,307,574,369.25
  5. Step 5: Solve for x
    x = 2,070,307,574,369.25/1,664,985.92
  6. Step 6: Final answer
    x = 1,243,438.49

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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.