Home / 406,635,838.80-561,161,805.30-220,996,863.60

Finding the Fourth Proportional to 406,635,838.80, 561,161,805.30 and 220,996,863.60

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Solution

The fourth proportional to 406,635,838.80, 561,161,805.30 and 220,996,863.60 is: 304,978,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,635,838.80 : 561,161,805.30 = 220,996,863.60 : x
  2. Step 2: Convert to fraction form
    406,635,838.80/561,161,805.30 = 220,996,863.60/x
  3. Step 3: Cross multiply
    406,635,838.80x = 561,161,805.30 × 220,996,863.60
  4. Step 4: Simplify right side
    406,635,838.80x = 124,014,998,943,413,840
  5. Step 5: Solve for x
    x = 124,014,998,943,413,840/406,635,838.80
  6. Step 6: Final answer
    x = 304,978,034.67

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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.