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Finding the Fourth Proportional to 510,768.60, 766,152.90 and 458,410.20

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Solution

The fourth proportional to 510,768.60, 766,152.90 and 458,410.20 is: 687,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,768.60 : 766,152.90 = 458,410.20 : x
  2. Step 2: Convert to fraction form
    510,768.60/766,152.90 = 458,410.20/x
  3. Step 3: Cross multiply
    510,768.60x = 766,152.90 × 458,410.20
  4. Step 4: Simplify right side
    510,768.60x = 351,212,304,119.58
  5. Step 5: Solve for x
    x = 351,212,304,119.58/510,768.60
  6. Step 6: Final answer
    x = 687,615.30

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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.