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Finding the Fourth Proportional to 394,379.40, 591,569.10 and 371,051.40

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Solution

The fourth proportional to 394,379.40, 591,569.10 and 371,051.40 is: 556,577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,379.40 : 591,569.10 = 371,051.40 : x
  2. Step 2: Convert to fraction form
    394,379.40/591,569.10 = 371,051.40/x
  3. Step 3: Cross multiply
    394,379.40x = 591,569.10 × 371,051.40
  4. Step 4: Simplify right side
    394,379.40x = 219,502,542,751.74
  5. Step 5: Solve for x
    x = 219,502,542,751.74/394,379.40
  6. Step 6: Final answer
    x = 556,577.10

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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.