Home / 643,389.28-965,090.90-194,114.17

Finding the Fourth Proportional to 643,389.28, 965,090.90 and 194,114.17

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Solution

The fourth proportional to 643,389.28, 965,090.90 and 194,114.17 is: 291,173.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,389.28 : 965,090.90 = 194,114.17 : x
  2. Step 2: Convert to fraction form
    643,389.28/965,090.90 = 194,114.17/x
  3. Step 3: Cross multiply
    643,389.28x = 965,090.90 × 194,114.17
  4. Step 4: Simplify right side
    643,389.28x = 187,337,820,719.70
  5. Step 5: Solve for x
    x = 187,337,820,719.70/643,389.28
  6. Step 6: Final answer
    x = 291,173.36

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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.