Home / 809,348.70-1,215,405.45-530,103.90

Finding the Fourth Proportional to 809,348.70, 1,215,405.45 and 530,103.90

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Solution

The fourth proportional to 809,348.70, 1,215,405.45 and 530,103.90 is: 796,061.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,348.70 : 1,215,405.45 = 530,103.90 : x
  2. Step 2: Convert to fraction form
    809,348.70/1,215,405.45 = 530,103.90/x
  3. Step 3: Cross multiply
    809,348.70x = 1,215,405.45 × 530,103.90
  4. Step 4: Simplify right side
    809,348.70x = 644,291,169,126.26
  5. Step 5: Solve for x
    x = 644,291,169,126.26/809,348.70
  6. Step 6: Final answer
    x = 796,061.29

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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.