Home / 521,641,024.80-782,461,537.20-279,776,320.80

Finding the Fourth Proportional to 521,641,024.80, 782,461,537.20 and 279,776,320.80

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Solution

The fourth proportional to 521,641,024.80, 782,461,537.20 and 279,776,320.80 is: 419,664,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,641,024.80 : 782,461,537.20 = 279,776,320.80 : x
  2. Step 2: Convert to fraction form
    521,641,024.80/782,461,537.20 = 279,776,320.80/x
  3. Step 3: Cross multiply
    521,641,024.80x = 782,461,537.20 × 279,776,320.80
  4. Step 4: Simplify right side
    521,641,024.80x = 218,914,210,045,328,352
  5. Step 5: Solve for x
    x = 218,914,210,045,328,352/521,641,024.80
  6. Step 6: Final answer
    x = 419,664,481.20

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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.