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Finding the Fourth Proportional to 988,980,879, 1,483,434,706.50 and 399,026,256.60

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Solution

The fourth proportional to 988,980,879, 1,483,434,706.50 and 399,026,256.60 is: 598,524,612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,980,879 : 1,483,434,706.50 = 399,026,256.60 : x
  2. Step 2: Convert to fraction form
    988,980,879/1,483,434,706.50 = 399,026,256.60/x
  3. Step 3: Cross multiply
    988,980,879x = 1,483,434,706.50 × 399,026,256.60
  4. Step 4: Simplify right side
    988,980,879x = 591,929,397,845,214,720
  5. Step 5: Solve for x
    x = 591,929,397,845,214,720/988,980,879
  6. Step 6: Final answer
    x = 598,524,612.98

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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.