Home / 1,265,005.12-1,745,784.48-728,633.92

Finding the Fourth Proportional to 1,265,005.12, 1,745,784.48 and 728,633.92

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Solution

The fourth proportional to 1,265,005.12, 1,745,784.48 and 728,633.92 is: 1,005,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,005.12 : 1,745,784.48 = 728,633.92 : x
  2. Step 2: Convert to fraction form
    1,265,005.12/1,745,784.48 = 728,633.92/x
  3. Step 3: Cross multiply
    1,265,005.12x = 1,745,784.48 × 728,633.92
  4. Step 4: Simplify right side
    1,265,005.12x = 1,272,037,789,137.56
  5. Step 5: Solve for x
    x = 1,272,037,789,137.56/1,265,005.12
  6. Step 6: Final answer
    x = 1,005,559.40

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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.