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Finding the Fourth Proportional to 868,454.40, 1,302,638.40 and 447,772.80

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Solution

The fourth proportional to 868,454.40, 1,302,638.40 and 447,772.80 is: 671,636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,454.40 : 1,302,638.40 = 447,772.80 : x
  2. Step 2: Convert to fraction form
    868,454.40/1,302,638.40 = 447,772.80/x
  3. Step 3: Cross multiply
    868,454.40x = 1,302,638.40 × 447,772.80
  4. Step 4: Simplify right side
    868,454.40x = 583,286,043,755.52
  5. Step 5: Solve for x
    x = 583,286,043,755.52/868,454.40
  6. Step 6: Final answer
    x = 671,636.93

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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.