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Finding the Fourth Proportional to 663,377.40, 993,971.70 and 382,404.60

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Solution

The fourth proportional to 663,377.40, 993,971.70 and 382,404.60 is: 572,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,377.40 : 993,971.70 = 382,404.60 : x
  2. Step 2: Convert to fraction form
    663,377.40/993,971.70 = 382,404.60/x
  3. Step 3: Cross multiply
    663,377.40x = 993,971.70 × 382,404.60
  4. Step 4: Simplify right side
    663,377.40x = 380,099,350,349.82
  5. Step 5: Solve for x
    x = 380,099,350,349.82/663,377.40
  6. Step 6: Final answer
    x = 572,976.03

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1.5x scale

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.