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Finding the Fourth Proportional to 478,615.80, 717,923.70 and 301,906.20

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Solution

The fourth proportional to 478,615.80, 717,923.70 and 301,906.20 is: 452,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,615.80 : 717,923.70 = 301,906.20 : x
  2. Step 2: Convert to fraction form
    478,615.80/717,923.70 = 301,906.20/x
  3. Step 3: Cross multiply
    478,615.80x = 717,923.70 × 301,906.20
  4. Step 4: Simplify right side
    478,615.80x = 216,745,616,156.94
  5. Step 5: Solve for x
    x = 216,745,616,156.94/478,615.80
  6. Step 6: Final answer
    x = 452,859.30

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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.