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Finding the Fourth Proportional to 437,027.40, 655,694.70 and 421,667.40

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Solution

The fourth proportional to 437,027.40, 655,694.70 and 421,667.40 is: 632,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,027.40 : 655,694.70 = 421,667.40 : x
  2. Step 2: Convert to fraction form
    437,027.40/655,694.70 = 421,667.40/x
  3. Step 3: Cross multiply
    437,027.40x = 655,694.70 × 421,667.40
  4. Step 4: Simplify right side
    437,027.40x = 276,485,079,342.78
  5. Step 5: Solve for x
    x = 276,485,079,342.78/437,027.40
  6. Step 6: Final answer
    x = 632,649.30

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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.