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Finding the Fourth Proportional to 647,575.50, 893,654.19 and 379,303.50

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Solution

The fourth proportional to 647,575.50, 893,654.19 and 379,303.50 is: 523,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,575.50 : 893,654.19 = 379,303.50 : x
  2. Step 2: Convert to fraction form
    647,575.50/893,654.19 = 379,303.50/x
  3. Step 3: Cross multiply
    647,575.50x = 893,654.19 × 379,303.50
  4. Step 4: Simplify right side
    647,575.50x = 338,966,162,056.67
  5. Step 5: Solve for x
    x = 338,966,162,056.67/647,575.50
  6. Step 6: Final answer
    x = 523,438.83

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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.