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Finding the Fourth Proportional to 621,637.63, 857,851.37 and 349,705.44

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Solution

The fourth proportional to 621,637.63, 857,851.37 and 349,705.44 is: 482,588.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,637.63 : 857,851.37 = 349,705.44 : x
  2. Step 2: Convert to fraction form
    621,637.63/857,851.37 = 349,705.44/x
  3. Step 3: Cross multiply
    621,637.63x = 857,851.37 × 349,705.44
  4. Step 4: Simplify right side
    621,637.63x = 299,995,290,800.45
  5. Step 5: Solve for x
    x = 299,995,290,800.45/621,637.63
  6. Step 6: Final answer
    x = 482,588.69

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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.