Home / 621,122.83-857,144.35-349,191.94

Finding the Fourth Proportional to 621,122.83, 857,144.35 and 349,191.94

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Solution

The fourth proportional to 621,122.83, 857,144.35 and 349,191.94 is: 481,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,122.83 : 857,144.35 = 349,191.94 : x
  2. Step 2: Convert to fraction form
    621,122.83/857,144.35 = 349,191.94/x
  3. Step 3: Cross multiply
    621,122.83x = 857,144.35 × 349,191.94
  4. Step 4: Simplify right side
    621,122.83x = 299,307,897,166.66
  5. Step 5: Solve for x
    x = 299,307,897,166.66/621,122.83
  6. Step 6: Final answer
    x = 481,881.98

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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.