Home / 812,763.84-1,219,340.40-339,185.76

Finding the Fourth Proportional to 812,763.84, 1,219,340.40 and 339,185.76

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Solution

The fourth proportional to 812,763.84, 1,219,340.40 and 339,185.76 is: 508,859.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,763.84 : 1,219,340.40 = 339,185.76 : x
  2. Step 2: Convert to fraction form
    812,763.84/1,219,340.40 = 339,185.76/x
  3. Step 3: Cross multiply
    812,763.84x = 1,219,340.40 × 339,185.76
  4. Step 4: Simplify right side
    812,763.84x = 413,582,900,272.70
  5. Step 5: Solve for x
    x = 413,582,900,272.70/812,763.84
  6. Step 6: Final answer
    x = 508,859.87

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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.