Home / 621,129.06-857,152.89-349,198.20

Finding the Fourth Proportional to 621,129.06, 857,152.89 and 349,198.20

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Solution

The fourth proportional to 621,129.06, 857,152.89 and 349,198.20 is: 481,890.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,129.06 : 857,152.89 = 349,198.20 : x
  2. Step 2: Convert to fraction form
    621,129.06/857,152.89 = 349,198.20/x
  3. Step 3: Cross multiply
    621,129.06x = 857,152.89 × 349,198.20
  4. Step 4: Simplify right side
    621,129.06x = 299,316,246,312.80
  5. Step 5: Solve for x
    x = 299,316,246,312.80/621,129.06
  6. Step 6: Final answer
    x = 481,890.59

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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.