Home / 671,696.40-1,007,544.60-388,261.20

Finding the Fourth Proportional to 671,696.40, 1,007,544.60 and 388,261.20

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Solution

The fourth proportional to 671,696.40, 1,007,544.60 and 388,261.20 is: 582,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,696.40 : 1,007,544.60 = 388,261.20 : x
  2. Step 2: Convert to fraction form
    671,696.40/1,007,544.60 = 388,261.20/x
  3. Step 3: Cross multiply
    671,696.40x = 1,007,544.60 × 388,261.20
  4. Step 4: Simplify right side
    671,696.40x = 391,190,475,449.52
  5. Step 5: Solve for x
    x = 391,190,475,449.52/671,696.40
  6. Step 6: Final answer
    x = 582,391.80

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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.