Home / 631,219,778.96-870,938,766.45-376,851,629.63

Finding the Fourth Proportional to 631,219,778.96, 870,938,766.45 and 376,851,629.63

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Solution

The fourth proportional to 631,219,778.96, 870,938,766.45 and 376,851,629.63 is: 519,968,962.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,219,778.96 : 870,938,766.45 = 376,851,629.63 : x
  2. Step 2: Convert to fraction form
    631,219,778.96/870,938,766.45 = 376,851,629.63/x
  3. Step 3: Cross multiply
    631,219,778.96x = 870,938,766.45 × 376,851,629.63
  4. Step 4: Simplify right side
    631,219,778.96x = 328,214,693,440,269,824
  5. Step 5: Solve for x
    x = 328,214,693,440,269,824/631,219,778.96
  6. Step 6: Final answer
    x = 519,968,962.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.