Home / 521,553,753.20-782,330,629.80-314,929,492.40

Finding the Fourth Proportional to 521,553,753.20, 782,330,629.80 and 314,929,492.40

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Solution

The fourth proportional to 521,553,753.20, 782,330,629.80 and 314,929,492.40 is: 472,394,238.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,553,753.20 : 782,330,629.80 = 314,929,492.40 : x
  2. Step 2: Convert to fraction form
    521,553,753.20/782,330,629.80 = 314,929,492.40/x
  3. Step 3: Cross multiply
    521,553,753.20x = 782,330,629.80 × 314,929,492.40
  4. Step 4: Simplify right side
    521,553,753.20x = 246,378,988,131,886,272
  5. Step 5: Solve for x
    x = 246,378,988,131,886,272/521,553,753.20
  6. Step 6: Final answer
    x = 472,394,238.60

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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.