Home / 1,131,772.80-1,561,563.84-728,880

Finding the Fourth Proportional to 1,131,772.80, 1,561,563.84 and 728,880

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Solution

The fourth proportional to 1,131,772.80, 1,561,563.84 and 728,880 is: 1,005,672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,772.80 : 1,561,563.84 = 728,880 : x
  2. Step 2: Convert to fraction form
    1,131,772.80/1,561,563.84 = 728,880/x
  3. Step 3: Cross multiply
    1,131,772.80x = 1,561,563.84 × 728,880
  4. Step 4: Simplify right side
    1,131,772.80x = 1,138,192,651,699.20
  5. Step 5: Solve for x
    x = 1,138,192,651,699.20/1,131,772.80
  6. Step 6: Final answer
    x = 1,005,672.39

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.