Home / 427,290,134.22-640,845,519.48-120,510,502.56

Finding the Fourth Proportional to 427,290,134.22, 640,845,519.48 and 120,510,502.56

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Solution

The fourth proportional to 427,290,134.22, 640,845,519.48 and 120,510,502.56 is: 180,740,460.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,290,134.22 : 640,845,519.48 = 120,510,502.56 : x
  2. Step 2: Convert to fraction form
    427,290,134.22/640,845,519.48 = 120,510,502.56/x
  3. Step 3: Cross multiply
    427,290,134.22x = 640,845,519.48 × 120,510,502.56
  4. Step 4: Simplify right side
    427,290,134.22x = 77,228,615,615,859,072
  5. Step 5: Solve for x
    x = 77,228,615,615,859,072/427,290,134.22
  6. Step 6: Final answer
    x = 180,740,460.48

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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.