Home / 521,190,429.90-781,785,017.55-133,013,301.90

Finding the Fourth Proportional to 521,190,429.90, 781,785,017.55 and 133,013,301.90

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Solution

The fourth proportional to 521,190,429.90, 781,785,017.55 and 133,013,301.90 is: 199,519,792.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,190,429.90 : 781,785,017.55 = 133,013,301.90 : x
  2. Step 2: Convert to fraction form
    521,190,429.90/781,785,017.55 = 133,013,301.90/x
  3. Step 3: Cross multiply
    521,190,429.90x = 781,785,017.55 × 133,013,301.90
  4. Step 4: Simplify right side
    521,190,429.90x = 103,987,806,560,274,944
  5. Step 5: Solve for x
    x = 103,987,806,560,274,944/521,190,429.90
  6. Step 6: Final answer
    x = 199,519,792.76

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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.