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Finding the Fourth Proportional to 510,076.40, 765,114.60 and 478,583.60

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Solution

The fourth proportional to 510,076.40, 765,114.60 and 478,583.60 is: 717,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,076.40 : 765,114.60 = 478,583.60 : x
  2. Step 2: Convert to fraction form
    510,076.40/765,114.60 = 478,583.60/x
  3. Step 3: Cross multiply
    510,076.40x = 765,114.60 × 478,583.60
  4. Step 4: Simplify right side
    510,076.40x = 366,171,299,680.56
  5. Step 5: Solve for x
    x = 366,171,299,680.56/510,076.40
  6. Step 6: Final answer
    x = 717,875.40

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Similar ratio
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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.