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Finding the Fourth Proportional to 886,799.60, 1,330,393.80 and 287,658.80

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Solution

The fourth proportional to 886,799.60, 1,330,393.80 and 287,658.80 is: 431,551.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,799.60 : 1,330,393.80 = 287,658.80 : x
  2. Step 2: Convert to fraction form
    886,799.60/1,330,393.80 = 287,658.80/x
  3. Step 3: Cross multiply
    886,799.60x = 1,330,393.80 × 287,658.80
  4. Step 4: Simplify right side
    886,799.60x = 382,699,484,035.44
  5. Step 5: Solve for x
    x = 382,699,484,035.44/886,799.60
  6. Step 6: Final answer
    x = 431,551.26

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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.