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Finding the Fourth Proportional to 693,658.08, 957,228.03 and 387,735.05

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Solution

The fourth proportional to 693,658.08, 957,228.03 and 387,735.05 is: 535,063.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,658.08 : 957,228.03 = 387,735.05 : x
  2. Step 2: Convert to fraction form
    693,658.08/957,228.03 = 387,735.05/x
  3. Step 3: Cross multiply
    693,658.08x = 957,228.03 × 387,735.05
  4. Step 4: Simplify right side
    693,658.08x = 371,150,860,466.52
  5. Step 5: Solve for x
    x = 371,150,860,466.52/693,658.08
  6. Step 6: Final answer
    x = 535,063.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.