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Finding the Fourth Proportional to 602,480.86, 831,205.41 and 395,860.55

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Solution

The fourth proportional to 602,480.86, 831,205.41 and 395,860.55 is: 546,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,480.86 : 831,205.41 = 395,860.55 : x
  2. Step 2: Convert to fraction form
    602,480.86/831,205.41 = 395,860.55/x
  3. Step 3: Cross multiply
    602,480.86x = 831,205.41 × 395,860.55
  4. Step 4: Simplify right side
    602,480.86x = 329,041,430,765.58
  5. Step 5: Solve for x
    x = 329,041,430,765.58/602,480.86
  6. Step 6: Final answer
    x = 546,144.21

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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.