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Finding the Fourth Proportional to 542,821.92, 815,505.33 and 512,147.63

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Solution

The fourth proportional to 542,821.92, 815,505.33 and 512,147.63 is: 769,421.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,821.92 : 815,505.33 = 512,147.63 : x
  2. Step 2: Convert to fraction form
    542,821.92/815,505.33 = 512,147.63/x
  3. Step 3: Cross multiply
    542,821.92x = 815,505.33 × 512,147.63
  4. Step 4: Simplify right side
    542,821.92x = 417,659,117,934.34
  5. Step 5: Solve for x
    x = 417,659,117,934.34/542,821.92
  6. Step 6: Final answer
    x = 769,421.98

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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.