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Finding the Fourth Proportional to 571,661.24, 786,912.51 and 494,101.55

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Solution

The fourth proportional to 571,661.24, 786,912.51 and 494,101.55 is: 680,148.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,661.24 : 786,912.51 = 494,101.55 : x
  2. Step 2: Convert to fraction form
    571,661.24/786,912.51 = 494,101.55/x
  3. Step 3: Cross multiply
    571,661.24x = 786,912.51 × 494,101.55
  4. Step 4: Simplify right side
    571,661.24x = 388,814,686,970.83
  5. Step 5: Solve for x
    x = 388,814,686,970.83/571,661.24
  6. Step 6: Final answer
    x = 680,148.77

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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.