Home / 521,864,305.80-782,124,612.30-400,092,145.80

Finding the Fourth Proportional to 521,864,305.80, 782,124,612.30 and 400,092,145.80

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Solution

The fourth proportional to 521,864,305.80, 782,124,612.30 and 400,092,145.80 is: 599,623,141.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,864,305.80 : 782,124,612.30 = 400,092,145.80 : x
  2. Step 2: Convert to fraction form
    521,864,305.80/782,124,612.30 = 400,092,145.80/x
  3. Step 3: Cross multiply
    521,864,305.80x = 782,124,612.30 × 400,092,145.80
  4. Step 4: Simplify right side
    521,864,305.80x = 312,921,914,418,100,032
  5. Step 5: Solve for x
    x = 312,921,914,418,100,032/521,864,305.80
  6. Step 6: Final answer
    x = 599,623,141.38

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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.