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Finding the Fourth Proportional to 570,734.64, 787,122.36 and 355,650.48

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Solution

The fourth proportional to 570,734.64, 787,122.36 and 355,650.48 is: 490,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,734.64 : 787,122.36 = 355,650.48 : x
  2. Step 2: Convert to fraction form
    570,734.64/787,122.36 = 355,650.48/x
  3. Step 3: Cross multiply
    570,734.64x = 787,122.36 × 355,650.48
  4. Step 4: Simplify right side
    570,734.64x = 279,940,445,152.73
  5. Step 5: Solve for x
    x = 279,940,445,152.73/570,734.64
  6. Step 6: Final answer
    x = 490,491.42

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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.