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Finding the Fourth Proportional to 886,686.86, 1,330,217.35 and 287,601.50

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Solution

The fourth proportional to 886,686.86, 1,330,217.35 and 287,601.50 is: 431,462.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,686.86 : 1,330,217.35 = 287,601.50 : x
  2. Step 2: Convert to fraction form
    886,686.86/1,330,217.35 = 287,601.50/x
  3. Step 3: Cross multiply
    886,686.86x = 1,330,217.35 × 287,601.50
  4. Step 4: Simplify right side
    886,686.86x = 382,572,505,186.03
  5. Step 5: Solve for x
    x = 382,572,505,186.03/886,686.86
  6. Step 6: Final answer
    x = 431,462.92

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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.