Home / 863,401.80-1,295,102.70-272,425.80

Finding the Fourth Proportional to 863,401.80, 1,295,102.70 and 272,425.80

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Solution

The fourth proportional to 863,401.80, 1,295,102.70 and 272,425.80 is: 408,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,401.80 : 1,295,102.70 = 272,425.80 : x
  2. Step 2: Convert to fraction form
    863,401.80/1,295,102.70 = 272,425.80/x
  3. Step 3: Cross multiply
    863,401.80x = 1,295,102.70 × 272,425.80
  4. Step 4: Simplify right side
    863,401.80x = 352,819,389,129.66
  5. Step 5: Solve for x
    x = 352,819,389,129.66/863,401.80
  6. Step 6: Final answer
    x = 408,638.70

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Double scale
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Similar ratio
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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.