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Finding the Fourth Proportional to 620,652.61, 856,447.59 and 348,699.16

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Solution

The fourth proportional to 620,652.61, 856,447.59 and 348,699.16 is: 481,175.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,652.61 : 856,447.59 = 348,699.16 : x
  2. Step 2: Convert to fraction form
    620,652.61/856,447.59 = 348,699.16/x
  3. Step 3: Cross multiply
    620,652.61x = 856,447.59 × 348,699.16
  4. Step 4: Simplify right side
    620,652.61x = 298,642,555,217.02
  5. Step 5: Solve for x
    x = 298,642,555,217.02/620,652.61
  6. Step 6: Final answer
    x = 481,175.06

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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.