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Finding the Fourth Proportional to 621,557.43, 857,506.34 and 349,562.94

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Solution

The fourth proportional to 621,557.43, 857,506.34 and 349,562.94 is: 482,260.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,557.43 : 857,506.34 = 349,562.94 : x
  2. Step 2: Convert to fraction form
    621,557.43/857,506.34 = 349,562.94/x
  3. Step 3: Cross multiply
    621,557.43x = 857,506.34 × 349,562.94
  4. Step 4: Simplify right side
    621,557.43x = 299,752,435,531.23
  5. Step 5: Solve for x
    x = 299,752,435,531.23/621,557.43
  6. Step 6: Final answer
    x = 482,260.24

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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.