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Finding the Fourth Proportional to 490,432.06, 735,643.36 and 290,608.62

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Solution

The fourth proportional to 490,432.06, 735,643.36 and 290,608.62 is: 435,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,432.06 : 735,643.36 = 290,608.62 : x
  2. Step 2: Convert to fraction form
    490,432.06/735,643.36 = 290,608.62/x
  3. Step 3: Cross multiply
    490,432.06x = 735,643.36 × 290,608.62
  4. Step 4: Simplify right side
    490,432.06x = 213,784,301,661.76
  5. Step 5: Solve for x
    x = 213,784,301,661.76/490,432.06
  6. Step 6: Final answer
    x = 435,910.13

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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.