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Finding the Fourth Proportional to 438,015.10, 655,793.85 and 425,727.10

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Solution

The fourth proportional to 438,015.10, 655,793.85 and 425,727.10 is: 637,396.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,015.10 : 655,793.85 = 425,727.10 : x
  2. Step 2: Convert to fraction form
    438,015.10/655,793.85 = 425,727.10/x
  3. Step 3: Cross multiply
    438,015.10x = 655,793.85 × 425,727.10
  4. Step 4: Simplify right side
    438,015.10x = 279,189,213,958.34
  5. Step 5: Solve for x
    x = 279,189,213,958.34/438,015.10
  6. Step 6: Final answer
    x = 637,396.32

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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.