Home / 756,353.80-1,134,530.70-667,780.30

Finding the Fourth Proportional to 756,353.80, 1,134,530.70 and 667,780.30

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Solution

The fourth proportional to 756,353.80, 1,134,530.70 and 667,780.30 is: 1,001,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,353.80 : 1,134,530.70 = 667,780.30 : x
  2. Step 2: Convert to fraction form
    756,353.80/1,134,530.70 = 667,780.30/x
  3. Step 3: Cross multiply
    756,353.80x = 1,134,530.70 × 667,780.30
  4. Step 4: Simplify right side
    756,353.80x = 757,617,251,205.21
  5. Step 5: Solve for x
    x = 757,617,251,205.21/756,353.80
  6. Step 6: Final answer
    x = 1,001,670.45

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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.