Home / 643,759,777,164.63-888,407,442,684-354,746,653,734.78

Finding the Fourth Proportional to 643,759,777,164.63, 888,407,442,684 and 354,746,653,734.78

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Solution

The fourth proportional to 643,759,777,164.63, 888,407,442,684 and 354,746,653,734.78 is: 489,560,824,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,759,777,164.63 : 888,407,442,684 = 354,746,653,734.78 : x
  2. Step 2: Convert to fraction form
    643,759,777,164.63/888,407,442,684 = 354,746,653,734.78/x
  3. Step 3: Cross multiply
    643,759,777,164.63x = 888,407,442,684 × 354,746,653,734.78
  4. Step 4: Simplify right side
    643,759,777,164.63x = 315,159,567,445,222,389,448,704
  5. Step 5: Solve for x
    x = 315,159,567,445,222,389,448,704/643,759,777,164.63
  6. Step 6: Final answer
    x = 489,560,824,743.21

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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.