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Finding the Fourth Proportional to 620,657.61, 856,454.49 and 348,704.16

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Solution

The fourth proportional to 620,657.61, 856,454.49 and 348,704.16 is: 481,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,657.61 : 856,454.49 = 348,704.16 : x
  2. Step 2: Convert to fraction form
    620,657.61/856,454.49 = 348,704.16/x
  3. Step 3: Cross multiply
    620,657.61x = 856,454.49 × 348,704.16
  4. Step 4: Simplify right side
    620,657.61x = 298,649,243,513.68
  5. Step 5: Solve for x
    x = 298,649,243,513.68/620,657.61
  6. Step 6: Final answer
    x = 481,181.96

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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.