Home / 865,675,172.80-1,298,531,663.48-520,917,192.64

Finding the Fourth Proportional to 865,675,172.80, 1,298,531,663.48 and 520,917,192.64

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Solution

The fourth proportional to 865,675,172.80, 1,298,531,663.48 and 520,917,192.64 is: 781,387,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,675,172.80 : 1,298,531,663.48 = 520,917,192.64 : x
  2. Step 2: Convert to fraction form
    865,675,172.80/1,298,531,663.48 = 520,917,192.64/x
  3. Step 3: Cross multiply
    865,675,172.80x = 1,298,531,663.48 × 520,917,192.64
  4. Step 4: Simplify right side
    865,675,172.80x = 676,427,468,694,150,784
  5. Step 5: Solve for x
    x = 676,427,468,694,150,784/865,675,172.80
  6. Step 6: Final answer
    x = 781,387,164.55

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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.