Home / 1,139,739.12-1,564,603.80-978,313.92

Finding the Fourth Proportional to 1,139,739.12, 1,564,603.80 and 978,313.92

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Solution

The fourth proportional to 1,139,739.12, 1,564,603.80 and 978,313.92 is: 1,343,003.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,739.12 : 1,564,603.80 = 978,313.92 : x
  2. Step 2: Convert to fraction form
    1,139,739.12/1,564,603.80 = 978,313.92/x
  3. Step 3: Cross multiply
    1,139,739.12x = 1,564,603.80 × 978,313.92
  4. Step 4: Simplify right side
    1,139,739.12x = 1,530,673,676,824.90
  5. Step 5: Solve for x
    x = 1,530,673,676,824.90/1,139,739.12
  6. Step 6: Final answer
    x = 1,343,003.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.