Home / 782,773,147.45-1,175,010,543.78-316,755,376.44

Finding the Fourth Proportional to 782,773,147.45, 1,175,010,543.78 and 316,755,376.44

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Solution

The fourth proportional to 782,773,147.45, 1,175,010,543.78 and 316,755,376.44 is: 475,477,356.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,773,147.45 : 1,175,010,543.78 = 316,755,376.44 : x
  2. Step 2: Convert to fraction form
    782,773,147.45/1,175,010,543.78 = 316,755,376.44/x
  3. Step 3: Cross multiply
    782,773,147.45x = 1,175,010,543.78 × 316,755,376.44
  4. Step 4: Simplify right side
    782,773,147.45x = 372,190,907,116,003,008
  5. Step 5: Solve for x
    x = 372,190,907,116,003,008/782,773,147.45
  6. Step 6: Final answer
    x = 475,477,356.79

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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.