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Finding the Fourth Proportional to 392,893.20, 590,214.60 and 376,952.40

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Solution

The fourth proportional to 392,893.20, 590,214.60 and 376,952.40 is: 566,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,893.20 : 590,214.60 = 376,952.40 : x
  2. Step 2: Convert to fraction form
    392,893.20/590,214.60 = 376,952.40/x
  3. Step 3: Cross multiply
    392,893.20x = 590,214.60 × 376,952.40
  4. Step 4: Simplify right side
    392,893.20x = 222,482,809,985.04
  5. Step 5: Solve for x
    x = 222,482,809,985.04/392,893.20
  6. Step 6: Final answer
    x = 566,267.91

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1.5x scale

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.