Home / 1,396,702.47-1,927,387.26-815,979.45

Finding the Fourth Proportional to 1,396,702.47, 1,927,387.26 and 815,979.45

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Solution

The fourth proportional to 1,396,702.47, 1,927,387.26 and 815,979.45 is: 1,126,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,702.47 : 1,927,387.26 = 815,979.45 : x
  2. Step 2: Convert to fraction form
    1,396,702.47/1,927,387.26 = 815,979.45/x
  3. Step 3: Cross multiply
    1,396,702.47x = 1,927,387.26 × 815,979.45
  4. Step 4: Simplify right side
    1,396,702.47x = 1,572,708,396,351.81
  5. Step 5: Solve for x
    x = 1,572,708,396,351.81/1,396,702.47
  6. Step 6: Final answer
    x = 1,126,015.33

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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.