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Finding the Fourth Proportional to 661,651.80, 991,821.60 and 306,045.60

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Solution

The fourth proportional to 661,651.80, 991,821.60 and 306,045.60 is: 458,764.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,651.80 : 991,821.60 = 306,045.60 : x
  2. Step 2: Convert to fraction form
    661,651.80/991,821.60 = 306,045.60/x
  3. Step 3: Cross multiply
    661,651.80x = 991,821.60 × 306,045.60
  4. Step 4: Simplify right side
    661,651.80x = 303,542,636,664.96
  5. Step 5: Solve for x
    x = 303,542,636,664.96/661,651.80
  6. Step 6: Final answer
    x = 458,764.92

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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.