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Finding the Fourth Proportional to 579,672.40, 869,103.60 and 342,893.20

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Solution

The fourth proportional to 579,672.40, 869,103.60 and 342,893.20 is: 514,100.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,672.40 : 869,103.60 = 342,893.20 : x
  2. Step 2: Convert to fraction form
    579,672.40/869,103.60 = 342,893.20/x
  3. Step 3: Cross multiply
    579,672.40x = 869,103.60 × 342,893.20
  4. Step 4: Simplify right side
    579,672.40x = 298,009,714,535.52
  5. Step 5: Solve for x
    x = 298,009,714,535.52/579,672.40
  6. Step 6: Final answer
    x = 514,100.23

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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.