Home / 812,795.40-1,121,694.57-450,219.21

Finding the Fourth Proportional to 812,795.40, 1,121,694.57 and 450,219.21

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Solution

The fourth proportional to 812,795.40, 1,121,694.57 and 450,219.21 is: 621,322.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,795.40 : 1,121,694.57 = 450,219.21 : x
  2. Step 2: Convert to fraction form
    812,795.40/1,121,694.57 = 450,219.21/x
  3. Step 3: Cross multiply
    812,795.40x = 1,121,694.57 × 450,219.21
  4. Step 4: Simplify right side
    812,795.40x = 505,008,444,636.77
  5. Step 5: Solve for x
    x = 505,008,444,636.77/812,795.40
  6. Step 6: Final answer
    x = 621,322.96

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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.