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Finding the Fourth Proportional to 855,585.06, 1,284,639.20 and 477,245

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Solution

The fourth proportional to 855,585.06, 1,284,639.20 and 477,245 is: 716,571.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,585.06 : 1,284,639.20 = 477,245 : x
  2. Step 2: Convert to fraction form
    855,585.06/1,284,639.20 = 477,245/x
  3. Step 3: Cross multiply
    855,585.06x = 1,284,639.20 × 477,245
  4. Step 4: Simplify right side
    855,585.06x = 613,087,635,004
  5. Step 5: Solve for x
    x = 613,087,635,004/855,585.06
  6. Step 6: Final answer
    x = 716,571.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.