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Finding the Fourth Proportional to 978,407.10, 1,467,610.65 and 901,424.70

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Solution

The fourth proportional to 978,407.10, 1,467,610.65 and 901,424.70 is: 1,352,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,407.10 : 1,467,610.65 = 901,424.70 : x
  2. Step 2: Convert to fraction form
    978,407.10/1,467,610.65 = 901,424.70/x
  3. Step 3: Cross multiply
    978,407.10x = 1,467,610.65 × 901,424.70
  4. Step 4: Simplify right side
    978,407.10x = 1,322,940,489,893.06
  5. Step 5: Solve for x
    x = 1,322,940,489,893.06/978,407.10
  6. Step 6: Final answer
    x = 1,352,137.05

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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.