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Finding the Fourth Proportional to 488,374.68, 674,012.70 and 297,499.80

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Solution

The fourth proportional to 488,374.68, 674,012.70 and 297,499.80 is: 410,583.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,374.68 : 674,012.70 = 297,499.80 : x
  2. Step 2: Convert to fraction form
    488,374.68/674,012.70 = 297,499.80/x
  3. Step 3: Cross multiply
    488,374.68x = 674,012.70 × 297,499.80
  4. Step 4: Simplify right side
    488,374.68x = 200,518,643,447.46
  5. Step 5: Solve for x
    x = 200,518,643,447.46/488,374.68
  6. Step 6: Final answer
    x = 410,583.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.