Home / 542,823.67-815,507.95-512,149.38

Finding the Fourth Proportional to 542,823.67, 815,507.95 and 512,149.38

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Solution

The fourth proportional to 542,823.67, 815,507.95 and 512,149.38 is: 769,424.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,823.67 : 815,507.95 = 512,149.38 : x
  2. Step 2: Convert to fraction form
    542,823.67/815,507.95 = 512,149.38/x
  3. Step 3: Cross multiply
    542,823.67x = 815,507.95 × 512,149.38
  4. Step 4: Simplify right side
    542,823.67x = 417,661,890,977.57
  5. Step 5: Solve for x
    x = 417,661,890,977.57/542,823.67
  6. Step 6: Final answer
    x = 769,424.61

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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.