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Finding the Fourth Proportional to 603,613,600.80, 905,420,401.20 and 215,449,094.40

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Solution

The fourth proportional to 603,613,600.80, 905,420,401.20 and 215,449,094.40 is: 323,173,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,613,600.80 : 905,420,401.20 = 215,449,094.40 : x
  2. Step 2: Convert to fraction form
    603,613,600.80/905,420,401.20 = 215,449,094.40/x
  3. Step 3: Cross multiply
    603,613,600.80x = 905,420,401.20 × 215,449,094.40
  4. Step 4: Simplify right side
    603,613,600.80x = 195,072,005,489,824,704
  5. Step 5: Solve for x
    x = 195,072,005,489,824,704/603,613,600.80
  6. Step 6: Final answer
    x = 323,173,641.60

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1.5x scale

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.