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Finding the Fourth Proportional to 620,066.42, 855,625.56 and 348,164

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Solution

The fourth proportional to 620,066.42, 855,625.56 and 348,164 is: 480,429.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,066.42 : 855,625.56 = 348,164 : x
  2. Step 2: Convert to fraction form
    620,066.42/855,625.56 = 348,164/x
  3. Step 3: Cross multiply
    620,066.42x = 855,625.56 × 348,164
  4. Step 4: Simplify right side
    620,066.42x = 297,898,017,471.84
  5. Step 5: Solve for x
    x = 297,898,017,471.84/620,066.42
  6. Step 6: Final answer
    x = 480,429.21

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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.