Home / 812,867.76-1,121,743.44-450,284.04

Finding the Fourth Proportional to 812,867.76, 1,121,743.44 and 450,284.04

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Solution

The fourth proportional to 812,867.76, 1,121,743.44 and 450,284.04 is: 621,384.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,867.76 : 1,121,743.44 = 450,284.04 : x
  2. Step 2: Convert to fraction form
    812,867.76/1,121,743.44 = 450,284.04/x
  3. Step 3: Cross multiply
    812,867.76x = 1,121,743.44 × 450,284.04
  4. Step 4: Simplify right side
    812,867.76x = 505,103,168,006.70
  5. Step 5: Solve for x
    x = 505,103,168,006.70/812,867.76
  6. Step 6: Final answer
    x = 621,384.18

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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.