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Finding the Fourth Proportional to 518,512.20, 777,768.30 and 483,520.20

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Solution

The fourth proportional to 518,512.20, 777,768.30 and 483,520.20 is: 725,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,512.20 : 777,768.30 = 483,520.20 : x
  2. Step 2: Convert to fraction form
    518,512.20/777,768.30 = 483,520.20/x
  3. Step 3: Cross multiply
    518,512.20x = 777,768.30 × 483,520.20
  4. Step 4: Simplify right side
    518,512.20x = 376,066,683,969.66
  5. Step 5: Solve for x
    x = 376,066,683,969.66/518,512.20
  6. Step 6: Final answer
    x = 725,280.30

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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.