Home / 521,185,549.32-781,777,663.76-133,008,388.38

Finding the Fourth Proportional to 521,185,549.32, 781,777,663.76 and 133,008,388.38

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Solution

The fourth proportional to 521,185,549.32, 781,777,663.76 and 133,008,388.38 is: 199,512,414.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,185,549.32 : 781,777,663.76 = 133,008,388.38 : x
  2. Step 2: Convert to fraction form
    521,185,549.32/781,777,663.76 = 133,008,388.38/x
  3. Step 3: Cross multiply
    521,185,549.32x = 781,777,663.76 × 133,008,388.38
  4. Step 4: Simplify right side
    521,185,549.32x = 103,982,987,128,199,120
  5. Step 5: Solve for x
    x = 103,982,987,128,199,120/521,185,549.32
  6. Step 6: Final answer
    x = 199,512,414.08

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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.