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Finding the Fourth Proportional to 654,630.90, 903,376.44 and 379,000.34

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Solution

The fourth proportional to 654,630.90, 903,376.44 and 379,000.34 is: 523,012.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,630.90 : 903,376.44 = 379,000.34 : x
  2. Step 2: Convert to fraction form
    654,630.90/903,376.44 = 379,000.34/x
  3. Step 3: Cross multiply
    654,630.90x = 903,376.44 × 379,000.34
  4. Step 4: Simplify right side
    654,630.90x = 342,379,977,907.99
  5. Step 5: Solve for x
    x = 342,379,977,907.99/654,630.90
  6. Step 6: Final answer
    x = 523,012.25

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1.5x scale

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.