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Finding the Fourth Proportional to 576,977.60, 865,466.40 and 328,145.60

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Solution

The fourth proportional to 576,977.60, 865,466.40 and 328,145.60 is: 492,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,977.60 : 865,466.40 = 328,145.60 : x
  2. Step 2: Convert to fraction form
    576,977.60/865,466.40 = 328,145.60/x
  3. Step 3: Cross multiply
    576,977.60x = 865,466.40 × 328,145.60
  4. Step 4: Simplify right side
    576,977.60x = 283,998,991,107.84
  5. Step 5: Solve for x
    x = 283,998,991,107.84/576,977.60
  6. Step 6: Final answer
    x = 492,218.40

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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.