Home / 521,553,822.70-782,330,734.05-314,929,561.90

Finding the Fourth Proportional to 521,553,822.70, 782,330,734.05 and 314,929,561.90

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Solution

The fourth proportional to 521,553,822.70, 782,330,734.05 and 314,929,561.90 is: 472,394,342.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,553,822.70 : 782,330,734.05 = 314,929,561.90 : x
  2. Step 2: Convert to fraction form
    521,553,822.70/782,330,734.05 = 314,929,561.90/x
  3. Step 3: Cross multiply
    521,553,822.70x = 782,330,734.05 × 314,929,561.90
  4. Step 4: Simplify right side
    521,553,822.70x = 246,379,075,335,271,872
  5. Step 5: Solve for x
    x = 246,379,075,335,271,872/521,553,822.70
  6. Step 6: Final answer
    x = 472,394,342.85

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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.