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Finding the Fourth Proportional to 1,664,964.72, 2,297,651.16 and 901,018.32

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Solution

The fourth proportional to 1,664,964.72, 2,297,651.16 and 901,018.32 is: 1,243,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,964.72 : 2,297,651.16 = 901,018.32 : x
  2. Step 2: Convert to fraction form
    1,664,964.72/2,297,651.16 = 901,018.32/x
  3. Step 3: Cross multiply
    1,664,964.72x = 2,297,651.16 × 901,018.32
  4. Step 4: Simplify right side
    1,664,964.72x = 2,070,225,788,129.25
  5. Step 5: Solve for x
    x = 2,070,225,788,129.25/1,664,964.72
  6. Step 6: Final answer
    x = 1,243,405.20

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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.