Home / 539,623.16-809,370.28-419,799.71

Finding the Fourth Proportional to 539,623.16, 809,370.28 and 419,799.71

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Solution

The fourth proportional to 539,623.16, 809,370.28 and 419,799.71 is: 629,649.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,623.16 : 809,370.28 = 419,799.71 : x
  2. Step 2: Convert to fraction form
    539,623.16/809,370.28 = 419,799.71/x
  3. Step 3: Cross multiply
    539,623.16x = 809,370.28 × 419,799.71
  4. Step 4: Simplify right side
    539,623.16x = 339,773,409,013.42
  5. Step 5: Solve for x
    x = 339,773,409,013.42/539,623.16
  6. Step 6: Final answer
    x = 629,649.41

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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.