Home / 285,860,763.90-428,602,975.97-188,519,668.38

Finding the Fourth Proportional to 285,860,763.90, 428,602,975.97 and 188,519,668.38

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Solution

The fourth proportional to 285,860,763.90, 428,602,975.97 and 188,519,668.38 is: 282,655,408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,860,763.90 : 428,602,975.97 = 188,519,668.38 : x
  2. Step 2: Convert to fraction form
    285,860,763.90/428,602,975.97 = 188,519,668.38/x
  3. Step 3: Cross multiply
    285,860,763.90x = 428,602,975.97 × 188,519,668.38
  4. Step 4: Simplify right side
    285,860,763.90x = 80,800,090,895,602,896
  5. Step 5: Solve for x
    x = 80,800,090,895,602,896/285,860,763.90
  6. Step 6: Final answer
    x = 282,655,408.15

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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.