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Finding the Fourth Proportional to 721,583.64, 995,661.72 and 463,517.64

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Solution

The fourth proportional to 721,583.64, 995,661.72 and 463,517.64 is: 639,574.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,583.64 : 995,661.72 = 463,517.64 : x
  2. Step 2: Convert to fraction form
    721,583.64/995,661.72 = 463,517.64/x
  3. Step 3: Cross multiply
    721,583.64x = 995,661.72 × 463,517.64
  4. Step 4: Simplify right side
    721,583.64x = 461,506,770,692.74
  5. Step 5: Solve for x
    x = 461,506,770,692.74/721,583.64
  6. Step 6: Final answer
    x = 639,574.88

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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.