Home / 756,986.80-1,135,480.20-307,558.30

Finding the Fourth Proportional to 756,986.80, 1,135,480.20 and 307,558.30

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Solution

The fourth proportional to 756,986.80, 1,135,480.20 and 307,558.30 is: 461,337.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,986.80 : 1,135,480.20 = 307,558.30 : x
  2. Step 2: Convert to fraction form
    756,986.80/1,135,480.20 = 307,558.30/x
  3. Step 3: Cross multiply
    756,986.80x = 1,135,480.20 × 307,558.30
  4. Step 4: Simplify right side
    756,986.80x = 349,226,359,995.66
  5. Step 5: Solve for x
    x = 349,226,359,995.66/756,986.80
  6. Step 6: Final answer
    x = 461,337.45

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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.