Home / 643,381.44-888,096.24-439,285.92

Finding the Fourth Proportional to 643,381.44, 888,096.24 and 439,285.92

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Solution

The fourth proportional to 643,381.44, 888,096.24 and 439,285.92 is: 606,371.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,381.44 : 888,096.24 = 439,285.92 : x
  2. Step 2: Convert to fraction form
    643,381.44/888,096.24 = 439,285.92/x
  3. Step 3: Cross multiply
    643,381.44x = 888,096.24 × 439,285.92
  4. Step 4: Simplify right side
    643,381.44x = 390,128,173,836.94
  5. Step 5: Solve for x
    x = 390,128,173,836.94/643,381.44
  6. Step 6: Final answer
    x = 606,371.51

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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.