Home / 917,982,105.10-1,376,222,841.60-427,001,479.90

Finding the Fourth Proportional to 917,982,105.10, 1,376,222,841.60 and 427,001,479.90

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Solution

The fourth proportional to 917,982,105.10, 1,376,222,841.60 and 427,001,479.90 is: 640,153,208.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,982,105.10 : 1,376,222,841.60 = 427,001,479.90 : x
  2. Step 2: Convert to fraction form
    917,982,105.10/1,376,222,841.60 = 427,001,479.90/x
  3. Step 3: Cross multiply
    917,982,105.10x = 1,376,222,841.60 × 427,001,479.90
  4. Step 4: Simplify right side
    917,982,105.10x = 587,649,190,035,383,168
  5. Step 5: Solve for x
    x = 587,649,190,035,383,168/917,982,105.10
  6. Step 6: Final answer
    x = 640,153,208.62

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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.