Home / 2,109,124.78-2,910,646.10-1,293,778.37

Finding the Fourth Proportional to 2,109,124.78, 2,910,646.10 and 1,293,778.37

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Solution

The fourth proportional to 2,109,124.78, 2,910,646.10 and 1,293,778.37 is: 1,785,447.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109,124.78 : 2,910,646.10 = 1,293,778.37 : x
  2. Step 2: Convert to fraction form
    2,109,124.78/2,910,646.10 = 1,293,778.37/x
  3. Step 3: Cross multiply
    2,109,124.78x = 2,910,646.10 × 1,293,778.37
  4. Step 4: Simplify right side
    2,109,124.78x = 3,765,730,977,415.92
  5. Step 5: Solve for x
    x = 3,765,730,977,415.92/2,109,124.78
  6. Step 6: Final answer
    x = 1,785,447.22

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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.