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Finding the Fourth Proportional to 721,954.30, 995,984.20 and 435,315.15

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Solution

The fourth proportional to 721,954.30, 995,984.20 and 435,315.15 is: 600,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,954.30 : 995,984.20 = 435,315.15 : x
  2. Step 2: Convert to fraction form
    721,954.30/995,984.20 = 435,315.15/x
  3. Step 3: Cross multiply
    721,954.30x = 995,984.20 × 435,315.15
  4. Step 4: Simplify right side
    721,954.30x = 433,567,004,264.13
  5. Step 5: Solve for x
    x = 433,567,004,264.13/721,954.30
  6. Step 6: Final answer
    x = 600,546.33

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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.