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Finding the Fourth Proportional to 510,906.40, 766,359.60 and 510,906.40

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Solution

The fourth proportional to 510,906.40, 766,359.60 and 510,906.40 is: 766,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,906.40 : 766,359.60 = 510,906.40 : x
  2. Step 2: Convert to fraction form
    510,906.40/766,359.60 = 510,906.40/x
  3. Step 3: Cross multiply
    510,906.40x = 766,359.60 × 510,906.40
  4. Step 4: Simplify right side
    510,906.40x = 391,538,024,341.44
  5. Step 5: Solve for x
    x = 391,538,024,341.44/510,906.40
  6. Step 6: Final answer
    x = 766,359.60

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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.