Home / 438,589.13-605,366.39-286,007.81

Finding the Fourth Proportional to 438,589.13, 605,366.39 and 286,007.81

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Solution

The fourth proportional to 438,589.13, 605,366.39 and 286,007.81 is: 394,764.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,589.13 : 605,366.39 = 286,007.81 : x
  2. Step 2: Convert to fraction form
    438,589.13/605,366.39 = 286,007.81/x
  3. Step 3: Cross multiply
    438,589.13x = 605,366.39 × 286,007.81
  4. Step 4: Simplify right side
    438,589.13x = 173,139,513,139.69
  5. Step 5: Solve for x
    x = 173,139,513,139.69/438,589.13
  6. Step 6: Final answer
    x = 394,764.72

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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.