Home / 521,622,007.80-782,433,011.70-368,566,999.80

Finding the Fourth Proportional to 521,622,007.80, 782,433,011.70 and 368,566,999.80

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Solution

The fourth proportional to 521,622,007.80, 782,433,011.70 and 368,566,999.80 is: 552,850,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,622,007.80 : 782,433,011.70 = 368,566,999.80 : x
  2. Step 2: Convert to fraction form
    521,622,007.80/782,433,011.70 = 368,566,999.80/x
  3. Step 3: Cross multiply
    521,622,007.80x = 782,433,011.70 × 368,566,999.80
  4. Step 4: Simplify right side
    521,622,007.80x = 288,378,987,666,747,328
  5. Step 5: Solve for x
    x = 288,378,987,666,747,328/521,622,007.80
  6. Step 6: Final answer
    x = 552,850,499.70

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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.