Home / 510,993,003.60-766,489,505.40-420,293,739.60

Finding the Fourth Proportional to 510,993,003.60, 766,489,505.40 and 420,293,739.60

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Solution

The fourth proportional to 510,993,003.60, 766,489,505.40 and 420,293,739.60 is: 630,440,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,993,003.60 : 766,489,505.40 = 420,293,739.60 : x
  2. Step 2: Convert to fraction form
    510,993,003.60/766,489,505.40 = 420,293,739.60/x
  3. Step 3: Cross multiply
    510,993,003.60x = 766,489,505.40 × 420,293,739.60
  4. Step 4: Simplify right side
    510,993,003.60x = 322,150,740,588,720,384
  5. Step 5: Solve for x
    x = 322,150,740,588,720,384/510,993,003.60
  6. Step 6: Final answer
    x = 630,440,609.40

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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.