Home / 621,121.76-857,041.02-349,151.96

Finding the Fourth Proportional to 621,121.76, 857,041.02 and 349,151.96

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Solution

The fourth proportional to 621,121.76, 857,041.02 and 349,151.96 is: 481,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,121.76 : 857,041.02 = 349,151.96 : x
  2. Step 2: Convert to fraction form
    621,121.76/857,041.02 = 349,151.96/x
  3. Step 3: Cross multiply
    621,121.76x = 857,041.02 × 349,151.96
  4. Step 4: Simplify right side
    621,121.76x = 299,237,551,933.40
  5. Step 5: Solve for x
    x = 299,237,551,933.40/621,121.76
  6. Step 6: Final answer
    x = 481,769.55

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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.