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Finding the Fourth Proportional to 394,378.40, 591,567.60 and 371,050.40

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Solution

The fourth proportional to 394,378.40, 591,567.60 and 371,050.40 is: 556,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,378.40 : 591,567.60 = 371,050.40 : x
  2. Step 2: Convert to fraction form
    394,378.40/591,567.60 = 371,050.40/x
  3. Step 3: Cross multiply
    394,378.40x = 591,567.60 × 371,050.40
  4. Step 4: Simplify right side
    394,378.40x = 219,501,394,607.04
  5. Step 5: Solve for x
    x = 219,501,394,607.04/394,378.40
  6. Step 6: Final answer
    x = 556,575.60

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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.