Home / 2,142,062.70-3,211,077.69-721,126.14

Finding the Fourth Proportional to 2,142,062.70, 3,211,077.69 and 721,126.14

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Solution

The fourth proportional to 2,142,062.70, 3,211,077.69 and 721,126.14 is: 1,081,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142,062.70 : 3,211,077.69 = 721,126.14 : x
  2. Step 2: Convert to fraction form
    2,142,062.70/3,211,077.69 = 721,126.14/x
  3. Step 3: Cross multiply
    2,142,062.70x = 3,211,077.69 × 721,126.14
  4. Step 4: Simplify right side
    2,142,062.70x = 2,315,592,059,829.82
  5. Step 5: Solve for x
    x = 2,315,592,059,829.82/2,142,062.70
  6. Step 6: Final answer
    x = 1,081,010.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.