Home / 865,795,181.76-1,299,139,270.83-405,780,085.44

Finding the Fourth Proportional to 865,795,181.76, 1,299,139,270.83 and 405,780,085.44

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Solution

The fourth proportional to 865,795,181.76, 1,299,139,270.83 and 405,780,085.44 is: 608,879,392.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,795,181.76 : 1,299,139,270.83 = 405,780,085.44 : x
  2. Step 2: Convert to fraction form
    865,795,181.76/1,299,139,270.83 = 405,780,085.44/x
  3. Step 3: Cross multiply
    865,795,181.76x = 1,299,139,270.83 × 405,780,085.44
  4. Step 4: Simplify right side
    865,795,181.76x = 527,164,844,315,856,640
  5. Step 5: Solve for x
    x = 527,164,844,315,856,640/865,795,181.76
  6. Step 6: Final answer
    x = 608,879,392.52

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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.