Home / 821,097.40-1,231,390.10-322,614.20

Finding the Fourth Proportional to 821,097.40, 1,231,390.10 and 322,614.20

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Solution

The fourth proportional to 821,097.40, 1,231,390.10 and 322,614.20 is: 483,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,097.40 : 1,231,390.10 = 322,614.20 : x
  2. Step 2: Convert to fraction form
    821,097.40/1,231,390.10 = 322,614.20/x
  3. Step 3: Cross multiply
    821,097.40x = 1,231,390.10 × 322,614.20
  4. Step 4: Simplify right side
    821,097.40x = 397,263,931,999.42
  5. Step 5: Solve for x
    x = 397,263,931,999.42/821,097.40
  6. Step 6: Final answer
    x = 483,820.72

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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.