Home / 931,633.50-1,286,630.10-641,998.17

Finding the Fourth Proportional to 931,633.50, 1,286,630.10 and 641,998.17

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Solution

The fourth proportional to 931,633.50, 1,286,630.10 and 641,998.17 is: 886,629.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,633.50 : 1,286,630.10 = 641,998.17 : x
  2. Step 2: Convert to fraction form
    931,633.50/1,286,630.10 = 641,998.17/x
  3. Step 3: Cross multiply
    931,633.50x = 1,286,630.10 × 641,998.17
  4. Step 4: Simplify right side
    931,633.50x = 826,014,169,666.92
  5. Step 5: Solve for x
    x = 826,014,169,666.92/931,633.50
  6. Step 6: Final answer
    x = 886,629.96

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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.