Home / 812,883.09-1,121,763.96-450,305.85

Finding the Fourth Proportional to 812,883.09, 1,121,763.96 and 450,305.85

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Solution

The fourth proportional to 812,883.09, 1,121,763.96 and 450,305.85 is: 621,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,883.09 : 1,121,763.96 = 450,305.85 : x
  2. Step 2: Convert to fraction form
    812,883.09/1,121,763.96 = 450,305.85/x
  3. Step 3: Cross multiply
    812,883.09x = 1,121,763.96 × 450,305.85
  4. Step 4: Simplify right side
    812,883.09x = 505,136,873,507.17
  5. Step 5: Solve for x
    x = 505,136,873,507.17/812,883.09
  6. Step 6: Final answer
    x = 621,413.93

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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.