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Finding the Fourth Proportional to 608,778.72, 840,247.05 and 354,163.32

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Solution

The fourth proportional to 608,778.72, 840,247.05 and 354,163.32 is: 488,822.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,778.72 : 840,247.05 = 354,163.32 : x
  2. Step 2: Convert to fraction form
    608,778.72/840,247.05 = 354,163.32/x
  3. Step 3: Cross multiply
    608,778.72x = 840,247.05 × 354,163.32
  4. Step 4: Simplify right side
    608,778.72x = 297,584,684,848.21
  5. Step 5: Solve for x
    x = 297,584,684,848.21/608,778.72
  6. Step 6: Final answer
    x = 488,822.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.