Home / 1,229,820.37-1,842,147.16-780,309.86

Finding the Fourth Proportional to 1,229,820.37, 1,842,147.16 and 780,309.86

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Solution

The fourth proportional to 1,229,820.37, 1,842,147.16 and 780,309.86 is: 1,168,825.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,820.37 : 1,842,147.16 = 780,309.86 : x
  2. Step 2: Convert to fraction form
    1,229,820.37/1,842,147.16 = 780,309.86/x
  3. Step 3: Cross multiply
    1,229,820.37x = 1,842,147.16 × 780,309.86
  4. Step 4: Simplify right side
    1,229,820.37x = 1,437,445,581,357.49
  5. Step 5: Solve for x
    x = 1,437,445,581,357.49/1,229,820.37
  6. Step 6: Final answer
    x = 1,168,825.64

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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.