Home / 605,448-835,598.43-391,211.10

Finding the Fourth Proportional to 605,448, 835,598.43 and 391,211.10

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Solution

The fourth proportional to 605,448, 835,598.43 and 391,211.10 is: 539,923.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,448 : 835,598.43 = 391,211.10 : x
  2. Step 2: Convert to fraction form
    605,448/835,598.43 = 391,211.10/x
  3. Step 3: Cross multiply
    605,448x = 835,598.43 × 391,211.10
  4. Step 4: Simplify right side
    605,448x = 326,895,380,958.57
  5. Step 5: Solve for x
    x = 326,895,380,958.57/605,448
  6. Step 6: Final answer
    x = 539,923.13

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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.