Home / 426,146,378.82-639,211,996.17-135,005,934.66

Finding the Fourth Proportional to 426,146,378.82, 639,211,996.17 and 135,005,934.66

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Solution

The fourth proportional to 426,146,378.82, 639,211,996.17 and 135,005,934.66 is: 202,506,503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,146,378.82 : 639,211,996.17 = 135,005,934.66 : x
  2. Step 2: Convert to fraction form
    426,146,378.82/639,211,996.17 = 135,005,934.66/x
  3. Step 3: Cross multiply
    426,146,378.82x = 639,211,996.17 × 135,005,934.66
  4. Step 4: Simplify right side
    426,146,378.82x = 86,297,412,988,815,184
  5. Step 5: Solve for x
    x = 86,297,412,988,815,184/426,146,378.82
  6. Step 6: Final answer
    x = 202,506,503.11

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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.