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Finding the Fourth Proportional to 520,085.80, 727,187 and 520,085.80

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Solution

The fourth proportional to 520,085.80, 727,187 and 520,085.80 is: 727,187

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,085.80 : 727,187 = 520,085.80 : x
  2. Step 2: Convert to fraction form
    520,085.80/727,187 = 520,085.80/x
  3. Step 3: Cross multiply
    520,085.80x = 727,187 × 520,085.80
  4. Step 4: Simplify right side
    520,085.80x = 378,199,632,644.60
  5. Step 5: Solve for x
    x = 378,199,632,644.60/520,085.80
  6. Step 6: Final answer
    x = 727,187

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.