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Finding the Fourth Proportional to 836,507.76, 1,254,765.87 and 205,421.82

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Solution

The fourth proportional to 836,507.76, 1,254,765.87 and 205,421.82 is: 308,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,507.76 : 1,254,765.87 = 205,421.82 : x
  2. Step 2: Convert to fraction form
    836,507.76/1,254,765.87 = 205,421.82/x
  3. Step 3: Cross multiply
    836,507.76x = 1,254,765.87 × 205,421.82
  4. Step 4: Simplify right side
    836,507.76x = 257,756,288,689.28
  5. Step 5: Solve for x
    x = 257,756,288,689.28/836,507.76
  6. Step 6: Final answer
    x = 308,133.77

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Double scale
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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.