Home / 521,448,127.20-782,172,190.80-262,563,314.40

Finding the Fourth Proportional to 521,448,127.20, 782,172,190.80 and 262,563,314.40

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Solution

The fourth proportional to 521,448,127.20, 782,172,190.80 and 262,563,314.40 is: 393,844,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,448,127.20 : 782,172,190.80 = 262,563,314.40 : x
  2. Step 2: Convert to fraction form
    521,448,127.20/782,172,190.80 = 262,563,314.40/x
  3. Step 3: Cross multiply
    521,448,127.20x = 782,172,190.80 × 262,563,314.40
  4. Step 4: Simplify right side
    521,448,127.20x = 205,369,722,847,957,184
  5. Step 5: Solve for x
    x = 205,369,722,847,957,184/521,448,127.20
  6. Step 6: Final answer
    x = 393,844,971.60

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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.