Home / 661,861.44-993,016.80-288,129.60

Finding the Fourth Proportional to 661,861.44, 993,016.80 and 288,129.60

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Solution

The fourth proportional to 661,861.44, 993,016.80 and 288,129.60 is: 432,292.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,861.44 : 993,016.80 = 288,129.60 : x
  2. Step 2: Convert to fraction form
    661,861.44/993,016.80 = 288,129.60/x
  3. Step 3: Cross multiply
    661,861.44x = 993,016.80 × 288,129.60
  4. Step 4: Simplify right side
    661,861.44x = 286,117,533,377.28
  5. Step 5: Solve for x
    x = 286,117,533,377.28/661,861.44
  6. Step 6: Final answer
    x = 432,292.19

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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.