Home / 727,860.52-1,004,468.61-421,938.10

Finding the Fourth Proportional to 727,860.52, 1,004,468.61 and 421,938.10

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Solution

The fourth proportional to 727,860.52, 1,004,468.61 and 421,938.10 is: 582,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,860.52 : 1,004,468.61 = 421,938.10 : x
  2. Step 2: Convert to fraction form
    727,860.52/1,004,468.61 = 421,938.10/x
  3. Step 3: Cross multiply
    727,860.52x = 1,004,468.61 × 421,938.10
  4. Step 4: Simplify right side
    727,860.52x = 423,823,576,813.04
  5. Step 5: Solve for x
    x = 423,823,576,813.04/727,860.52
  6. Step 6: Final answer
    x = 582,286.81

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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.