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Finding the Fourth Proportional to 454,243.40, 680,781.90 and 348,538.40

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Solution

The fourth proportional to 454,243.40, 680,781.90 and 348,538.40 is: 522,360.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,243.40 : 680,781.90 = 348,538.40 : x
  2. Step 2: Convert to fraction form
    454,243.40/680,781.90 = 348,538.40/x
  3. Step 3: Cross multiply
    454,243.40x = 680,781.90 × 348,538.40
  4. Step 4: Simplify right side
    454,243.40x = 237,278,634,174.96
  5. Step 5: Solve for x
    x = 237,278,634,174.96/454,243.40
  6. Step 6: Final answer
    x = 522,360.11

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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.