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Finding the Fourth Proportional to 721,917.84, 995,810.76 and 463,707.86

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Solution

The fourth proportional to 721,917.84, 995,810.76 and 463,707.86 is: 639,636.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,917.84 : 995,810.76 = 463,707.86 : x
  2. Step 2: Convert to fraction form
    721,917.84/995,810.76 = 463,707.86/x
  3. Step 3: Cross multiply
    721,917.84x = 995,810.76 × 463,707.86
  4. Step 4: Simplify right side
    721,917.84x = 461,765,276,484.57
  5. Step 5: Solve for x
    x = 461,765,276,484.57/721,917.84
  6. Step 6: Final answer
    x = 639,636.88

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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.