Home / 406,635,839.80-561,161,806.68-220,996,864.60

Finding the Fourth Proportional to 406,635,839.80, 561,161,806.68 and 220,996,864.60

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Solution

The fourth proportional to 406,635,839.80, 561,161,806.68 and 220,996,864.60 is: 304,978,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,635,839.80 : 561,161,806.68 = 220,996,864.60 : x
  2. Step 2: Convert to fraction form
    406,635,839.80/561,161,806.68 = 220,996,864.60/x
  3. Step 3: Cross multiply
    406,635,839.80x = 561,161,806.68 × 220,996,864.60
  4. Step 4: Simplify right side
    406,635,839.80x = 124,014,999,809,551,328
  5. Step 5: Solve for x
    x = 124,014,999,809,551,328/406,635,839.80
  6. Step 6: Final answer
    x = 304,978,036.05

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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.