Home / 645,619,120,346.76-890,949,091,261.98-352,644,230,009.39

Finding the Fourth Proportional to 645,619,120,346.76, 890,949,091,261.98 and 352,644,230,009.39

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Solution

The fourth proportional to 645,619,120,346.76, 890,949,091,261.98 and 352,644,230,009.39 is: 486,646,145,326.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,619,120,346.76 : 890,949,091,261.98 = 352,644,230,009.39 : x
  2. Step 2: Convert to fraction form
    645,619,120,346.76/890,949,091,261.98 = 352,644,230,009.39/x
  3. Step 3: Cross multiply
    645,619,120,346.76x = 890,949,091,261.98 × 352,644,230,009.39
  4. Step 4: Simplify right side
    645,619,120,346.76x = 314,188,056,265,646,661,435,392
  5. Step 5: Solve for x
    x = 314,188,056,265,646,661,435,392/645,619,120,346.76
  6. Step 6: Final answer
    x = 486,646,145,326.21

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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.