Home / 427,290,103.55-640,845,473.49-120,510,471.89

Finding the Fourth Proportional to 427,290,103.55, 640,845,473.49 and 120,510,471.89

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Solution

The fourth proportional to 427,290,103.55, 640,845,473.49 and 120,510,471.89 is: 180,740,414.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,290,103.55 : 640,845,473.49 = 120,510,471.89 : x
  2. Step 2: Convert to fraction form
    427,290,103.55/640,845,473.49 = 120,510,471.89/x
  3. Step 3: Cross multiply
    427,290,103.55x = 640,845,473.49 × 120,510,471.89
  4. Step 4: Simplify right side
    427,290,103.55x = 77,228,590,418,850,384
  5. Step 5: Solve for x
    x = 77,228,590,418,850,384/427,290,103.55
  6. Step 6: Final answer
    x = 180,740,414.48

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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.