Home / 638,669.87-956,920.34-385,418.22

Finding the Fourth Proportional to 638,669.87, 956,920.34 and 385,418.22

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Solution

The fourth proportional to 638,669.87, 956,920.34 and 385,418.22 is: 577,472.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,669.87 : 956,920.34 = 385,418.22 : x
  2. Step 2: Convert to fraction form
    638,669.87/956,920.34 = 385,418.22/x
  3. Step 3: Cross multiply
    638,669.87x = 956,920.34 × 385,418.22
  4. Step 4: Simplify right side
    638,669.87x = 368,814,529,339.99
  5. Step 5: Solve for x
    x = 368,814,529,339.99/638,669.87
  6. Step 6: Final answer
    x = 577,472.88

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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.