Home / 812,123.68-1,120,717.08-449,539.74

Finding the Fourth Proportional to 812,123.68, 1,120,717.08 and 449,539.74

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Solution

The fourth proportional to 812,123.68, 1,120,717.08 and 449,539.74 is: 620,357.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,123.68 : 1,120,717.08 = 449,539.74 : x
  2. Step 2: Convert to fraction form
    812,123.68/1,120,717.08 = 449,539.74/x
  3. Step 3: Cross multiply
    812,123.68x = 1,120,717.08 × 449,539.74
  4. Step 4: Simplify right side
    812,123.68x = 503,806,864,756.76
  5. Step 5: Solve for x
    x = 503,806,864,756.76/812,123.68
  6. Step 6: Final answer
    x = 620,357.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.