Home / 1,275,276.80-1,910,815.50-891,064.64

Finding the Fourth Proportional to 1,275,276.80, 1,910,815.50 and 891,064.64

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Solution

The fourth proportional to 1,275,276.80, 1,910,815.50 and 891,064.64 is: 1,335,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,276.80 : 1,910,815.50 = 891,064.64 : x
  2. Step 2: Convert to fraction form
    1,275,276.80/1,910,815.50 = 891,064.64/x
  3. Step 3: Cross multiply
    1,275,276.80x = 1,910,815.50 × 891,064.64
  4. Step 4: Simplify right side
    1,275,276.80x = 1,702,660,125,613.92
  5. Step 5: Solve for x
    x = 1,702,660,125,613.92/1,275,276.80
  6. Step 6: Final answer
    x = 1,335,129.85

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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.