Home / 1,307,280.12-1,960,921.72-408,726.60

Finding the Fourth Proportional to 1,307,280.12, 1,960,921.72 and 408,726.60

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Solution

The fourth proportional to 1,307,280.12, 1,960,921.72 and 408,726.60 is: 613,090.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307,280.12 : 1,960,921.72 = 408,726.60 : x
  2. Step 2: Convert to fraction form
    1,307,280.12/1,960,921.72 = 408,726.60/x
  3. Step 3: Cross multiply
    1,307,280.12x = 1,960,921.72 × 408,726.60
  4. Step 4: Simplify right side
    1,307,280.12x = 801,480,867,481.75
  5. Step 5: Solve for x
    x = 801,480,867,481.75/1,307,280.12
  6. Step 6: Final answer
    x = 613,090.38

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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.