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Finding the Fourth Proportional to 721,956.43, 995,987.13 and 435,317.28

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Solution

The fourth proportional to 721,956.43, 995,987.13 and 435,317.28 is: 600,549.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,956.43 : 995,987.13 = 435,317.28 : x
  2. Step 2: Convert to fraction form
    721,956.43/995,987.13 = 435,317.28/x
  3. Step 3: Cross multiply
    721,956.43x = 995,987.13 × 435,317.28
  4. Step 4: Simplify right side
    721,956.43x = 433,570,401,190.08
  5. Step 5: Solve for x
    x = 433,570,401,190.08/721,956.43
  6. Step 6: Final answer
    x = 600,549.26

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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.