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Finding the Fourth Proportional to 520,181.42, 780,429.42 and 368,671.52

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Solution

The fourth proportional to 520,181.42, 780,429.42 and 368,671.52 is: 553,118.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,181.42 : 780,429.42 = 368,671.52 : x
  2. Step 2: Convert to fraction form
    520,181.42/780,429.42 = 368,671.52/x
  3. Step 3: Cross multiply
    520,181.42x = 780,429.42 × 368,671.52
  4. Step 4: Simplify right side
    520,181.42x = 287,722,096,621.97
  5. Step 5: Solve for x
    x = 287,722,096,621.97/520,181.42
  6. Step 6: Final answer
    x = 553,118.75

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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.