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Finding the Fourth Proportional to 661,299.68, 991,927.56 and 287,322.68

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Solution

The fourth proportional to 661,299.68, 991,927.56 and 287,322.68 is: 430,974.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,299.68 : 991,927.56 = 287,322.68 : x
  2. Step 2: Convert to fraction form
    661,299.68/991,927.56 = 287,322.68/x
  3. Step 3: Cross multiply
    661,299.68x = 991,927.56 × 287,322.68
  4. Step 4: Simplify right side
    661,299.68x = 285,003,284,905.06
  5. Step 5: Solve for x
    x = 285,003,284,905.06/661,299.68
  6. Step 6: Final answer
    x = 430,974.48

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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.