Home / 813,067.21-1,122,017.90-450,489.74

Finding the Fourth Proportional to 813,067.21, 1,122,017.90 and 450,489.74

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Solution

The fourth proportional to 813,067.21, 1,122,017.90 and 450,489.74 is: 621,667.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,067.21 : 1,122,017.90 = 450,489.74 : x
  2. Step 2: Convert to fraction form
    813,067.21/1,122,017.90 = 450,489.74/x
  3. Step 3: Cross multiply
    813,067.21x = 1,122,017.90 × 450,489.74
  4. Step 4: Simplify right side
    813,067.21x = 505,457,552,598.94
  5. Step 5: Solve for x
    x = 505,457,552,598.94/813,067.21
  6. Step 6: Final answer
    x = 621,667.62

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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.