Home / 1,221,440,998,067.60-1,685,665,128,393.60-672,732,193,890.45

Finding the Fourth Proportional to 1,221,440,998,067.60, 1,685,665,128,393.60 and 672,732,193,890.45

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Solution

The fourth proportional to 1,221,440,998,067.60, 1,685,665,128,393.60 and 672,732,193,890.45 is: 928,412,589,542.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440,998,067.60 : 1,685,665,128,393.60 = 672,732,193,890.45 : x
  2. Step 2: Convert to fraction form
    1,221,440,998,067.60/1,685,665,128,393.60 = 672,732,193,890.45/x
  3. Step 3: Cross multiply
    1,221,440,998,067.60x = 1,685,665,128,393.60 × 672,732,193,890.45
  4. Step 4: Simplify right side
    1,221,440,998,067.60x = 1,134,001,199,988,853,566,341,120
  5. Step 5: Solve for x
    x = 1,134,001,199,988,853,566,341,120/1,221,440,998,067.60
  6. Step 6: Final answer
    x = 928,412,589,542.12

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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.