Home / 643,914.40-966,001.20-223,103.20

Finding the Fourth Proportional to 643,914.40, 966,001.20 and 223,103.20

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Solution

The fourth proportional to 643,914.40, 966,001.20 and 223,103.20 is: 334,699.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,914.40 : 966,001.20 = 223,103.20 : x
  2. Step 2: Convert to fraction form
    643,914.40/966,001.20 = 223,103.20/x
  3. Step 3: Cross multiply
    643,914.40x = 966,001.20 × 223,103.20
  4. Step 4: Simplify right side
    643,914.40x = 215,517,958,923.84
  5. Step 5: Solve for x
    x = 215,517,958,923.84/643,914.40
  6. Step 6: Final answer
    x = 334,699.70

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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.