Home / 651,504,979.20-977,257,468.80-393,012,076.80

Finding the Fourth Proportional to 651,504,979.20, 977,257,468.80 and 393,012,076.80

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Solution

The fourth proportional to 651,504,979.20, 977,257,468.80 and 393,012,076.80 is: 589,518,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,504,979.20 : 977,257,468.80 = 393,012,076.80 : x
  2. Step 2: Convert to fraction form
    651,504,979.20/977,257,468.80 = 393,012,076.80/x
  3. Step 3: Cross multiply
    651,504,979.20x = 977,257,468.80 × 393,012,076.80
  4. Step 4: Simplify right side
    651,504,979.20x = 384,073,987,381,399,168
  5. Step 5: Solve for x
    x = 384,073,987,381,399,168/651,504,979.20
  6. Step 6: Final answer
    x = 589,518,115.20

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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.