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Finding the Fourth Proportional to 891,640.60, 1,337,655.30 and 292,499.80

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Solution

The fourth proportional to 891,640.60, 1,337,655.30 and 292,499.80 is: 438,813.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,640.60 : 1,337,655.30 = 292,499.80 : x
  2. Step 2: Convert to fraction form
    891,640.60/1,337,655.30 = 292,499.80/x
  3. Step 3: Cross multiply
    891,640.60x = 1,337,655.30 × 292,499.80
  4. Step 4: Simplify right side
    891,640.60x = 391,263,907,718.94
  5. Step 5: Solve for x
    x = 391,263,907,718.94/891,640.60
  6. Step 6: Final answer
    x = 438,813.47

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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.