Home / 813,369.40-1,122,449.88-450,816.64

Finding the Fourth Proportional to 813,369.40, 1,122,449.88 and 450,816.64

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Solution

The fourth proportional to 813,369.40, 1,122,449.88 and 450,816.64 is: 622,127.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,369.40 : 1,122,449.88 = 450,816.64 : x
  2. Step 2: Convert to fraction form
    813,369.40/1,122,449.88 = 450,816.64/x
  3. Step 3: Cross multiply
    813,369.40x = 1,122,449.88 × 450,816.64
  4. Step 4: Simplify right side
    813,369.40x = 506,019,083,470.00
  5. Step 5: Solve for x
    x = 506,019,083,470.00/813,369.40
  6. Step 6: Final answer
    x = 622,127.02

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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.