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Finding the Fourth Proportional to 620,940.10, 929,553.63 and 380,296.21

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Solution

The fourth proportional to 620,940.10, 929,553.63 and 380,296.21 is: 569,307.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,940.10 : 929,553.63 = 380,296.21 : x
  2. Step 2: Convert to fraction form
    620,940.10/929,553.63 = 380,296.21/x
  3. Step 3: Cross multiply
    620,940.10x = 929,553.63 × 380,296.21
  4. Step 4: Simplify right side
    620,940.10x = 353,505,722,480.74
  5. Step 5: Solve for x
    x = 353,505,722,480.74/620,940.10
  6. Step 6: Final answer
    x = 569,307.29

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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.