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Finding the Fourth Proportional to 721,076.49, 995,218.68 and 463,275.71

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Solution

The fourth proportional to 721,076.49, 995,218.68 and 463,275.71 is: 639,406.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,076.49 : 995,218.68 = 463,275.71 : x
  2. Step 2: Convert to fraction form
    721,076.49/995,218.68 = 463,275.71/x
  3. Step 3: Cross multiply
    721,076.49x = 995,218.68 × 463,275.71
  4. Step 4: Simplify right side
    721,076.49x = 461,060,640,582.26
  5. Step 5: Solve for x
    x = 461,060,640,582.26/721,076.49
  6. Step 6: Final answer
    x = 639,406.01

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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.