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Finding the Fourth Proportional to 868,651.40, 1,302,912.30 and 363,081.80

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Solution

The fourth proportional to 868,651.40, 1,302,912.30 and 363,081.80 is: 544,595.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,651.40 : 1,302,912.30 = 363,081.80 : x
  2. Step 2: Convert to fraction form
    868,651.40/1,302,912.30 = 363,081.80/x
  3. Step 3: Cross multiply
    868,651.40x = 1,302,912.30 × 363,081.80
  4. Step 4: Simplify right side
    868,651.40x = 473,063,743,126.14
  5. Step 5: Solve for x
    x = 473,063,743,126.14/868,651.40
  6. Step 6: Final answer
    x = 544,595.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.