Home / 813,215.32-1,122,243.78-450,645.23

Finding the Fourth Proportional to 813,215.32, 1,122,243.78 and 450,645.23

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Solution

The fourth proportional to 813,215.32, 1,122,243.78 and 450,645.23 is: 621,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,215.32 : 1,122,243.78 = 450,645.23 : x
  2. Step 2: Convert to fraction form
    813,215.32/1,122,243.78 = 450,645.23/x
  3. Step 3: Cross multiply
    813,215.32x = 1,122,243.78 × 450,645.23
  4. Step 4: Simplify right side
    813,215.32x = 505,733,798,489.72
  5. Step 5: Solve for x
    x = 505,733,798,489.72/813,215.32
  6. Step 6: Final answer
    x = 621,894.09

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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.