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Finding the Fourth Proportional to 1,386,739.93, 1,913,891.15 and 798,027.25

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Solution

The fourth proportional to 1,386,739.93, 1,913,891.15 and 798,027.25 is: 1,101,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,739.93 : 1,913,891.15 = 798,027.25 : x
  2. Step 2: Convert to fraction form
    1,386,739.93/1,913,891.15 = 798,027.25/x
  3. Step 3: Cross multiply
    1,386,739.93x = 1,913,891.15 × 798,027.25
  4. Step 4: Simplify right side
    1,386,739.93x = 1,527,337,291,233.84
  5. Step 5: Solve for x
    x = 1,527,337,291,233.84/1,386,739.93
  6. Step 6: Final answer
    x = 1,101,386.97

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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.