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Finding the Fourth Proportional to 433,249.32, 649,869.66 and 328,709.64

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Solution

The fourth proportional to 433,249.32, 649,869.66 and 328,709.64 is: 493,061.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,249.32 : 649,869.66 = 328,709.64 : x
  2. Step 2: Convert to fraction form
    433,249.32/649,869.66 = 328,709.64/x
  3. Step 3: Cross multiply
    433,249.32x = 649,869.66 × 328,709.64
  4. Step 4: Simplify right side
    433,249.32x = 213,618,421,985.52
  5. Step 5: Solve for x
    x = 213,618,421,985.52/433,249.32
  6. Step 6: Final answer
    x = 493,061.18

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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.