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Finding the Fourth Proportional to 721,081.88, 995,217.86 and 434,602.29

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Solution

The fourth proportional to 721,081.88, 995,217.86 and 434,602.29 is: 599,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,081.88 : 995,217.86 = 434,602.29 : x
  2. Step 2: Convert to fraction form
    721,081.88/995,217.86 = 434,602.29/x
  3. Step 3: Cross multiply
    721,081.88x = 995,217.86 × 434,602.29
  4. Step 4: Simplify right side
    721,081.88x = 432,523,963,378.83
  5. Step 5: Solve for x
    x = 432,523,963,378.83/721,081.88
  6. Step 6: Final answer
    x = 599,826.42

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.