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Finding the Fourth Proportional to 663,374.40, 993,967.20 and 382,401.60

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Solution

The fourth proportional to 663,374.40, 993,967.20 and 382,401.60 is: 572,971.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,374.40 : 993,967.20 = 382,401.60 : x
  2. Step 2: Convert to fraction form
    663,374.40/993,967.20 = 382,401.60/x
  3. Step 3: Cross multiply
    663,374.40x = 993,967.20 × 382,401.60
  4. Step 4: Simplify right side
    663,374.40x = 380,094,647,627.52
  5. Step 5: Solve for x
    x = 380,094,647,627.52/663,374.40
  6. Step 6: Final answer
    x = 572,971.53

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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.