Home / 771,115.20-1,156,450.40-265,655.68

Finding the Fourth Proportional to 771,115.20, 1,156,450.40 and 265,655.68

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Solution

The fourth proportional to 771,115.20, 1,156,450.40 and 265,655.68 is: 398,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,115.20 : 1,156,450.40 = 265,655.68 : x
  2. Step 2: Convert to fraction form
    771,115.20/1,156,450.40 = 265,655.68/x
  3. Step 3: Cross multiply
    771,115.20x = 1,156,450.40 × 265,655.68
  4. Step 4: Simplify right side
    771,115.20x = 307,217,617,398.27
  5. Step 5: Solve for x
    x = 307,217,617,398.27/771,115.20
  6. Step 6: Final answer
    x = 398,406.90

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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.