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Finding the Fourth Proportional to 510,111.10, 765,166.65 and 485,616.70

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Solution

The fourth proportional to 510,111.10, 765,166.65 and 485,616.70 is: 728,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,111.10 : 765,166.65 = 485,616.70 : x
  2. Step 2: Convert to fraction form
    510,111.10/765,166.65 = 485,616.70/x
  3. Step 3: Cross multiply
    510,111.10x = 765,166.65 × 485,616.70
  4. Step 4: Simplify right side
    510,111.10x = 371,577,703,523.06
  5. Step 5: Solve for x
    x = 371,577,703,523.06/510,111.10
  6. Step 6: Final answer
    x = 728,425.05

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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.