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Finding the Fourth Proportional to 547,683.30, 821,330.55 and 379,203.30

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Solution

The fourth proportional to 547,683.30, 821,330.55 and 379,203.30 is: 568,670.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,683.30 : 821,330.55 = 379,203.30 : x
  2. Step 2: Convert to fraction form
    547,683.30/821,330.55 = 379,203.30/x
  3. Step 3: Cross multiply
    547,683.30x = 821,330.55 × 379,203.30
  4. Step 4: Simplify right side
    547,683.30x = 311,451,254,950.82
  5. Step 5: Solve for x
    x = 311,451,254,950.82/547,683.30
  6. Step 6: Final answer
    x = 568,670.35

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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.