Home / 1,291,978.20-1,782,912.56-719,018.22

Finding the Fourth Proportional to 1,291,978.20, 1,782,912.56 and 719,018.22

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Solution

The fourth proportional to 1,291,978.20, 1,782,912.56 and 719,018.22 is: 992,235.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,978.20 : 1,782,912.56 = 719,018.22 : x
  2. Step 2: Convert to fraction form
    1,291,978.20/1,782,912.56 = 719,018.22/x
  3. Step 3: Cross multiply
    1,291,978.20x = 1,782,912.56 × 719,018.22
  4. Step 4: Simplify right side
    1,291,978.20x = 1,281,946,615,306.84
  5. Step 5: Solve for x
    x = 1,281,946,615,306.84/1,291,978.20
  6. Step 6: Final answer
    x = 992,235.48

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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.