Home / 521,185,921.29-781,778,220.98-133,008,760.26

Finding the Fourth Proportional to 521,185,921.29, 781,778,220.98 and 133,008,760.26

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Solution

The fourth proportional to 521,185,921.29, 781,778,220.98 and 133,008,760.26 is: 199,512,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,185,921.29 : 781,778,220.98 = 133,008,760.26 : x
  2. Step 2: Convert to fraction form
    521,185,921.29/781,778,220.98 = 133,008,760.26/x
  3. Step 3: Cross multiply
    521,185,921.29x = 781,778,220.98 × 133,008,760.26
  4. Step 4: Simplify right side
    521,185,921.29x = 103,983,351,970,153,088
  5. Step 5: Solve for x
    x = 103,983,351,970,153,088/521,185,921.29
  6. Step 6: Final answer
    x = 199,512,971.71

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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.