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Finding the Fourth Proportional to 986,658.36, 1,479,728.32 and 425,568.12

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Solution

The fourth proportional to 986,658.36, 1,479,728.32 and 425,568.12 is: 638,240.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,658.36 : 1,479,728.32 = 425,568.12 : x
  2. Step 2: Convert to fraction form
    986,658.36/1,479,728.32 = 425,568.12/x
  3. Step 3: Cross multiply
    986,658.36x = 1,479,728.32 × 425,568.12
  4. Step 4: Simplify right side
    986,658.36x = 629,725,199,253.16
  5. Step 5: Solve for x
    x = 629,725,199,253.16/986,658.36
  6. Step 6: Final answer
    x = 638,240.37

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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.