Home / 812,883.10-1,121,763.96-450,305.86

Finding the Fourth Proportional to 812,883.10, 1,121,763.96 and 450,305.86

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Solution

The fourth proportional to 812,883.10, 1,121,763.96 and 450,305.86 is: 621,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,883.10 : 1,121,763.96 = 450,305.86 : x
  2. Step 2: Convert to fraction form
    812,883.10/1,121,763.96 = 450,305.86/x
  3. Step 3: Cross multiply
    812,883.10x = 1,121,763.96 × 450,305.86
  4. Step 4: Simplify right side
    812,883.10x = 505,136,884,724.81
  5. Step 5: Solve for x
    x = 505,136,884,724.81/812,883.10
  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.