Home / 1,288,173.64-1,777,735.12-715,213.76

Finding the Fourth Proportional to 1,288,173.64, 1,777,735.12 and 715,213.76

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Solution

The fourth proportional to 1,288,173.64, 1,777,735.12 and 715,213.76 is: 987,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,173.64 : 1,777,735.12 = 715,213.76 : x
  2. Step 2: Convert to fraction form
    1,288,173.64/1,777,735.12 = 715,213.76/x
  3. Step 3: Cross multiply
    1,288,173.64x = 1,777,735.12 × 715,213.76
  4. Step 4: Simplify right side
    1,288,173.64x = 1,271,460,619,459.25
  5. Step 5: Solve for x
    x = 1,271,460,619,459.25/1,288,173.64
  6. Step 6: Final answer
    x = 987,025.80

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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.