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Finding the Fourth Proportional to 620,514.24, 856,285.92 and 379,200.48

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Solution

The fourth proportional to 620,514.24, 856,285.92 and 379,200.48 is: 523,282.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,514.24 : 856,285.92 = 379,200.48 : x
  2. Step 2: Convert to fraction form
    620,514.24/856,285.92 = 379,200.48/x
  3. Step 3: Cross multiply
    620,514.24x = 856,285.92 × 379,200.48
  4. Step 4: Simplify right side
    620,514.24x = 324,704,031,881.24
  5. Step 5: Solve for x
    x = 324,704,031,881.24/620,514.24
  6. Step 6: Final answer
    x = 523,282.16

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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.