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Finding the Fourth Proportional to 483,212.40, 724,818.60 and 478,546.80

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Solution

The fourth proportional to 483,212.40, 724,818.60 and 478,546.80 is: 717,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,212.40 : 724,818.60 = 478,546.80 : x
  2. Step 2: Convert to fraction form
    483,212.40/724,818.60 = 478,546.80/x
  3. Step 3: Cross multiply
    483,212.40x = 724,818.60 × 478,546.80
  4. Step 4: Simplify right side
    483,212.40x = 346,859,621,610.48
  5. Step 5: Solve for x
    x = 346,859,621,610.48/483,212.40
  6. Step 6: Final answer
    x = 717,820.20

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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.