Home / 521,190,428.40-781,785,015.30-133,013,300.40

Finding the Fourth Proportional to 521,190,428.40, 781,785,015.30 and 133,013,300.40

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Solution

The fourth proportional to 521,190,428.40, 781,785,015.30 and 133,013,300.40 is: 199,519,790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,190,428.40 : 781,785,015.30 = 133,013,300.40 : x
  2. Step 2: Convert to fraction form
    521,190,428.40/781,785,015.30 = 133,013,300.40/x
  3. Step 3: Cross multiply
    521,190,428.40x = 781,785,015.30 × 133,013,300.40
  4. Step 4: Simplify right side
    521,190,428.40x = 103,987,805,088,317,488
  5. Step 5: Solve for x
    x = 103,987,805,088,317,488/521,190,428.40
  6. Step 6: Final answer
    x = 199,519,790.51

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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.