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Finding the Fourth Proportional to 887,205, 1,331,188.86 and 288,349.80

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Solution

The fourth proportional to 887,205, 1,331,188.86 and 288,349.80 is: 432,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,205 : 1,331,188.86 = 288,349.80 : x
  2. Step 2: Convert to fraction form
    887,205/1,331,188.86 = 288,349.80/x
  3. Step 3: Cross multiply
    887,205x = 1,331,188.86 × 288,349.80
  4. Step 4: Simplify right side
    887,205x = 383,848,041,543.23
  5. Step 5: Solve for x
    x = 383,848,041,543.23/887,205
  6. Step 6: Final answer
    x = 432,648.65

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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.