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Finding the Fourth Proportional to 490,940.40, 736,842.60 and 291,010.80

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Solution

The fourth proportional to 490,940.40, 736,842.60 and 291,010.80 is: 436,772.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,940.40 : 736,842.60 = 291,010.80 : x
  2. Step 2: Convert to fraction form
    490,940.40/736,842.60 = 291,010.80/x
  3. Step 3: Cross multiply
    490,940.40x = 736,842.60 × 291,010.80
  4. Step 4: Simplify right side
    490,940.40x = 214,429,154,500.08
  5. Step 5: Solve for x
    x = 214,429,154,500.08/490,940.40
  6. Step 6: Final answer
    x = 436,772.27

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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.