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Finding the Fourth Proportional to 1,678,682,149.60, 2,316,540,456.96 and 925,978,844.64

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Solution

The fourth proportional to 1,678,682,149.60, 2,316,540,456.96 and 925,978,844.64 is: 1,277,828,239.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,682,149.60 : 2,316,540,456.96 = 925,978,844.64 : x
  2. Step 2: Convert to fraction form
    1,678,682,149.60/2,316,540,456.96 = 925,978,844.64/x
  3. Step 3: Cross multiply
    1,678,682,149.60x = 2,316,540,456.96 × 925,978,844.64
  4. Step 4: Simplify right side
    1,678,682,149.60x = 2,145,067,455,897,638,400
  5. Step 5: Solve for x
    x = 2,145,067,455,897,638,400/1,678,682,149.60
  6. Step 6: Final answer
    x = 1,277,828,239.50

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1.5x scale

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.