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Finding the Fourth Proportional to 661,232.96, 991,244.64 and 287,120.96

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Solution

The fourth proportional to 661,232.96, 991,244.64 and 287,120.96 is: 430,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,232.96 : 991,244.64 = 287,120.96 : x
  2. Step 2: Convert to fraction form
    661,232.96/991,244.64 = 287,120.96/x
  3. Step 3: Cross multiply
    661,232.96x = 991,244.64 × 287,120.96
  4. Step 4: Simplify right side
    661,232.96x = 284,607,112,631.65
  5. Step 5: Solve for x
    x = 284,607,112,631.65/661,232.96
  6. Step 6: Final answer
    x = 430,418.82

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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.