Home / 812,915.02-1,121,822.58-450,362.44

Finding the Fourth Proportional to 812,915.02, 1,121,822.58 and 450,362.44

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Solution

The fourth proportional to 812,915.02, 1,121,822.58 and 450,362.44 is: 621,500.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,915.02 : 1,121,822.58 = 450,362.44 : x
  2. Step 2: Convert to fraction form
    812,915.02/1,121,822.58 = 450,362.44/x
  3. Step 3: Cross multiply
    812,915.02x = 1,121,822.58 × 450,362.44
  4. Step 4: Simplify right side
    812,915.02x = 505,226,754,375.90
  5. Step 5: Solve for x
    x = 505,226,754,375.90/812,915.02
  6. Step 6: Final answer
    x = 621,500.09

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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.