Home / 812,907.09-1,121,819.83-450,335.90

Finding the Fourth Proportional to 812,907.09, 1,121,819.83 and 450,335.90

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Solution

The fourth proportional to 812,907.09, 1,121,819.83 and 450,335.90 is: 621,468.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,907.09 : 1,121,819.83 = 450,335.90 : x
  2. Step 2: Convert to fraction form
    812,907.09/1,121,819.83 = 450,335.90/x
  3. Step 3: Cross multiply
    812,907.09x = 1,121,819.83 × 450,335.90
  4. Step 4: Simplify right side
    812,907.09x = 505,195,744,459.61
  5. Step 5: Solve for x
    x = 505,195,744,459.61/812,907.09
  6. Step 6: Final answer
    x = 621,468.00

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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.