Home / 711,107,275,607.45-981,329,012,115.06-385,946,572,422.49

Finding the Fourth Proportional to 711,107,275,607.45, 981,329,012,115.06 and 385,946,572,422.49

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Solution

The fourth proportional to 711,107,275,607.45, 981,329,012,115.06 and 385,946,572,422.49 is: 532,606,797,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,107,275,607.45 : 981,329,012,115.06 = 385,946,572,422.49 : x
  2. Step 2: Convert to fraction form
    711,107,275,607.45/981,329,012,115.06 = 385,946,572,422.49/x
  3. Step 3: Cross multiply
    711,107,275,607.45x = 981,329,012,115.06 × 385,946,572,422.49
  4. Step 4: Simplify right side
    711,107,275,607.45x = 378,740,568,644,555,578,015,744
  5. Step 5: Solve for x
    x = 378,740,568,644,555,578,015,744/711,107,275,607.45
  6. Step 6: Final answer
    x = 532,606,797,365.45

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Double scale
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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.