Home / 419,906,047.20-630,173,998.80-215,328,818.40

Finding the Fourth Proportional to 419,906,047.20, 630,173,998.80 and 215,328,818.40

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Solution

The fourth proportional to 419,906,047.20, 630,173,998.80 and 215,328,818.40 is: 323,154,723.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,906,047.20 : 630,173,998.80 = 215,328,818.40 : x
  2. Step 2: Convert to fraction form
    419,906,047.20/630,173,998.80 = 215,328,818.40/x
  3. Step 3: Cross multiply
    419,906,047.20x = 630,173,998.80 × 215,328,818.40
  4. Step 4: Simplify right side
    419,906,047.20x = 135,694,622,548,007,008
  5. Step 5: Solve for x
    x = 135,694,622,548,007,008/419,906,047.20
  6. Step 6: Final answer
    x = 323,154,723.43

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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.