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Finding the Fourth Proportional to 579,672.90, 869,104.35 and 342,893.70

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Solution

The fourth proportional to 579,672.90, 869,104.35 and 342,893.70 is: 514,100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,672.90 : 869,104.35 = 342,893.70 : x
  2. Step 2: Convert to fraction form
    579,672.90/869,104.35 = 342,893.70/x
  3. Step 3: Cross multiply
    579,672.90x = 869,104.35 × 342,893.70
  4. Step 4: Simplify right side
    579,672.90x = 298,010,406,257.60
  5. Step 5: Solve for x
    x = 298,010,406,257.60/579,672.90
  6. Step 6: Final answer
    x = 514,100.98

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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.