Home / 432,021.02-647,974.62-128,408.69

Finding the Fourth Proportional to 432,021.02, 647,974.62 and 128,408.69

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Solution

The fourth proportional to 432,021.02, 647,974.62 and 128,408.69 is: 192,596.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,021.02 : 647,974.62 = 128,408.69 : x
  2. Step 2: Convert to fraction form
    432,021.02/647,974.62 = 128,408.69/x
  3. Step 3: Cross multiply
    432,021.02x = 647,974.62 × 128,408.69
  4. Step 4: Simplify right side
    432,021.02x = 83,205,573,727.38
  5. Step 5: Solve for x
    x = 83,205,573,727.38/432,021.02
  6. Step 6: Final answer
    x = 192,596.13

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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.