Home / 864,052.80-1,295,431.20-443,630.40

Finding the Fourth Proportional to 864,052.80, 1,295,431.20 and 443,630.40

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Solution

The fourth proportional to 864,052.80, 1,295,431.20 and 443,630.40 is: 665,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,052.80 : 1,295,431.20 = 443,630.40 : x
  2. Step 2: Convert to fraction form
    864,052.80/1,295,431.20 = 443,630.40/x
  3. Step 3: Cross multiply
    864,052.80x = 1,295,431.20 × 443,630.40
  4. Step 4: Simplify right side
    864,052.80x = 574,692,661,428.48
  5. Step 5: Solve for x
    x = 574,692,661,428.48/864,052.80
  6. Step 6: Final answer
    x = 665,112.90

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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.