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Finding the Fourth Proportional to 488,466.59, 674,412.85 and 304,984.54

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Solution

The fourth proportional to 488,466.59, 674,412.85 and 304,984.54 is: 421,084.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,466.59 : 674,412.85 = 304,984.54 : x
  2. Step 2: Convert to fraction form
    488,466.59/674,412.85 = 304,984.54/x
  3. Step 3: Cross multiply
    488,466.59x = 674,412.85 × 304,984.54
  4. Step 4: Simplify right side
    488,466.59x = 205,685,494,051.59
  5. Step 5: Solve for x
    x = 205,685,494,051.59/488,466.59
  6. Step 6: Final answer
    x = 421,084.06

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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.