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Finding the Fourth Proportional to 490,159.60, 734,010.60 and 391,855.60

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Solution

The fourth proportional to 490,159.60, 734,010.60 and 391,855.60 is: 586,801.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,159.60 : 734,010.60 = 391,855.60 : x
  2. Step 2: Convert to fraction form
    490,159.60/734,010.60 = 391,855.60/x
  3. Step 3: Cross multiply
    490,159.60x = 734,010.60 × 391,855.60
  4. Step 4: Simplify right side
    490,159.60x = 287,626,164,069.36
  5. Step 5: Solve for x
    x = 287,626,164,069.36/490,159.60
  6. Step 6: Final answer
    x = 586,801.04

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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.