Home / 285,668,684.82-428,499,196.38-78,406,850.52

Finding the Fourth Proportional to 285,668,684.82, 428,499,196.38 and 78,406,850.52

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Solution

The fourth proportional to 285,668,684.82, 428,499,196.38 and 78,406,850.52 is: 117,609,224.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,668,684.82 : 428,499,196.38 = 78,406,850.52 : x
  2. Step 2: Convert to fraction form
    285,668,684.82/428,499,196.38 = 78,406,850.52/x
  3. Step 3: Cross multiply
    285,668,684.82x = 428,499,196.38 × 78,406,850.52
  4. Step 4: Simplify right side
    285,668,684.82x = 33,597,272,438,506,784
  5. Step 5: Solve for x
    x = 33,597,272,438,506,784/285,668,684.82
  6. Step 6: Final answer
    x = 117,609,224.34

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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.