Home / 1,139,743.12-1,564,609.28-978,317.92

Finding the Fourth Proportional to 1,139,743.12, 1,564,609.28 and 978,317.92

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Solution

The fourth proportional to 1,139,743.12, 1,564,609.28 and 978,317.92 is: 1,343,009.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,743.12 : 1,564,609.28 = 978,317.92 : x
  2. Step 2: Convert to fraction form
    1,139,743.12/1,564,609.28 = 978,317.92/x
  3. Step 3: Cross multiply
    1,139,743.12x = 1,564,609.28 × 978,317.92
  4. Step 4: Simplify right side
    1,139,743.12x = 1,530,685,296,422.30
  5. Step 5: Solve for x
    x = 1,530,685,296,422.30/1,139,743.12
  6. Step 6: Final answer
    x = 1,343,009.03

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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.