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Finding the Fourth Proportional to 315,520,846.20, 472,385,474.10 and 315,520,846.20

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Solution

The fourth proportional to 315,520,846.20, 472,385,474.10 and 315,520,846.20 is: 472,385,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,520,846.20 : 472,385,474.10 = 315,520,846.20 : x
  2. Step 2: Convert to fraction form
    315,520,846.20/472,385,474.10 = 315,520,846.20/x
  3. Step 3: Cross multiply
    315,520,846.20x = 472,385,474.10 × 315,520,846.20
  4. Step 4: Simplify right side
    315,520,846.20x = 149,047,464,520,620,192
  5. Step 5: Solve for x
    x = 149,047,464,520,620,192/315,520,846.20
  6. Step 6: Final answer
    x = 472,385,474.10

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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.