Home / 899,397.80-1,241,185.26-491,516.90

Finding the Fourth Proportional to 899,397.80, 1,241,185.26 and 491,516.90

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Solution

The fourth proportional to 899,397.80, 1,241,185.26 and 491,516.90 is: 678,302.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,397.80 : 1,241,185.26 = 491,516.90 : x
  2. Step 2: Convert to fraction form
    899,397.80/1,241,185.26 = 491,516.90/x
  3. Step 3: Cross multiply
    899,397.80x = 1,241,185.26 × 491,516.90
  4. Step 4: Simplify right side
    899,397.80x = 610,063,531,320.89
  5. Step 5: Solve for x
    x = 610,063,531,320.89/899,397.80
  6. Step 6: Final answer
    x = 678,302.23

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Double scale
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Similar ratio
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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.