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Finding the Fourth Proportional to 489,348.30, 734,022.45 and 347,630.70

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Solution

The fourth proportional to 489,348.30, 734,022.45 and 347,630.70 is: 521,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,348.30 : 734,022.45 = 347,630.70 : x
  2. Step 2: Convert to fraction form
    489,348.30/734,022.45 = 347,630.70/x
  3. Step 3: Cross multiply
    489,348.30x = 734,022.45 × 347,630.70
  4. Step 4: Simplify right side
    489,348.30x = 255,168,738,109.22
  5. Step 5: Solve for x
    x = 255,168,738,109.22/489,348.30
  6. Step 6: Final answer
    x = 521,446.05

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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.