Home / 1,288,171.64-1,777,732.36-715,211.76

Finding the Fourth Proportional to 1,288,171.64, 1,777,732.36 and 715,211.76

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Solution

The fourth proportional to 1,288,171.64, 1,777,732.36 and 715,211.76 is: 987,023.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,171.64 : 1,777,732.36 = 715,211.76 : x
  2. Step 2: Convert to fraction form
    1,288,171.64/1,777,732.36 = 715,211.76/x
  3. Step 3: Cross multiply
    1,288,171.64x = 1,777,732.36 × 715,211.76
  4. Step 4: Simplify right side
    1,288,171.64x = 1,271,455,090,004.55
  5. Step 5: Solve for x
    x = 1,271,455,090,004.55/1,288,171.64
  6. Step 6: Final answer
    x = 987,023.04

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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.