Home / 521,536,999.80-782,305,499.70-133,390,208.10

Finding the Fourth Proportional to 521,536,999.80, 782,305,499.70 and 133,390,208.10

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Solution

The fourth proportional to 521,536,999.80, 782,305,499.70 and 133,390,208.10 is: 200,085,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,536,999.80 : 782,305,499.70 = 133,390,208.10 : x
  2. Step 2: Convert to fraction form
    521,536,999.80/782,305,499.70 = 133,390,208.10/x
  3. Step 3: Cross multiply
    521,536,999.80x = 782,305,499.70 × 133,390,208.10
  4. Step 4: Simplify right side
    521,536,999.80x = 104,351,893,402,757,488
  5. Step 5: Solve for x
    x = 104,351,893,402,757,488/521,536,999.80
  6. Step 6: Final answer
    x = 200,085,312.15

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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.