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Finding the Fourth Proportional to 488,479.38, 674,430.48 and 304,997.28

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Solution

The fourth proportional to 488,479.38, 674,430.48 and 304,997.28 is: 421,101.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,479.38 : 674,430.48 = 304,997.28 : x
  2. Step 2: Convert to fraction form
    488,479.38/674,430.48 = 304,997.28/x
  3. Step 3: Cross multiply
    488,479.38x = 674,430.48 × 304,997.28
  4. Step 4: Simplify right side
    488,479.38x = 205,699,461,949.09
  5. Step 5: Solve for x
    x = 205,699,461,949.09/488,479.38
  6. Step 6: Final answer
    x = 421,101.63

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1.5x scale

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.