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Finding the Fourth Proportional to 643,150.80, 887,504.04 and 356,644.08

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Solution

The fourth proportional to 643,150.80, 887,504.04 and 356,644.08 is: 492,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,150.80 : 887,504.04 = 356,644.08 : x
  2. Step 2: Convert to fraction form
    643,150.80/887,504.04 = 356,644.08/x
  3. Step 3: Cross multiply
    643,150.80x = 887,504.04 × 356,644.08
  4. Step 4: Simplify right side
    643,150.80x = 316,523,061,842.08
  5. Step 5: Solve for x
    x = 316,523,061,842.08/643,150.80
  6. Step 6: Final answer
    x = 492,144.40

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1.5x scale

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.