Home / 755,485.80-1,133,228.62-256,849.80

Finding the Fourth Proportional to 755,485.80, 1,133,228.62 and 256,849.80

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Solution

The fourth proportional to 755,485.80, 1,133,228.62 and 256,849.80 is: 385,274.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,485.80 : 1,133,228.62 = 256,849.80 : x
  2. Step 2: Convert to fraction form
    755,485.80/1,133,228.62 = 256,849.80/x
  3. Step 3: Cross multiply
    755,485.80x = 1,133,228.62 × 256,849.80
  4. Step 4: Simplify right side
    755,485.80x = 291,069,544,401.28
  5. Step 5: Solve for x
    x = 291,069,544,401.28/755,485.80
  6. Step 6: Final answer
    x = 385,274.67

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