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Finding the Fourth Proportional to 620,024.76, 855,578.43 and 361,924.20

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Solution

The fourth proportional to 620,024.76, 855,578.43 and 361,924.20 is: 499,422.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,024.76 : 855,578.43 = 361,924.20 : x
  2. Step 2: Convert to fraction form
    620,024.76/855,578.43 = 361,924.20/x
  3. Step 3: Cross multiply
    620,024.76x = 855,578.43 × 361,924.20
  4. Step 4: Simplify right side
    620,024.76x = 309,654,538,815.01
  5. Step 5: Solve for x
    x = 309,654,538,815.01/620,024.76
  6. Step 6: Final answer
    x = 499,422.86

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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.