Home / 739,855.80-1,109,783.70-657,187.20

Finding the Fourth Proportional to 739,855.80, 1,109,783.70 and 657,187.20

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Solution

The fourth proportional to 739,855.80, 1,109,783.70 and 657,187.20 is: 985,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,855.80 : 1,109,783.70 = 657,187.20 : x
  2. Step 2: Convert to fraction form
    739,855.80/1,109,783.70 = 657,187.20/x
  3. Step 3: Cross multiply
    739,855.80x = 1,109,783.70 × 657,187.20
  4. Step 4: Simplify right side
    739,855.80x = 729,335,642,408.64
  5. Step 5: Solve for x
    x = 729,335,642,408.64/739,855.80
  6. Step 6: Final answer
    x = 985,780.80

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.