Home / 621,719.73-857,908.40-349,764.53

Finding the Fourth Proportional to 621,719.73, 857,908.40 and 349,764.53

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Solution

The fourth proportional to 621,719.73, 857,908.40 and 349,764.53 is: 482,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,719.73 : 857,908.40 = 349,764.53 : x
  2. Step 2: Convert to fraction form
    621,719.73/857,908.40 = 349,764.53/x
  3. Step 3: Cross multiply
    621,719.73x = 857,908.40 × 349,764.53
  4. Step 4: Simplify right side
    621,719.73x = 300,065,922,270.69
  5. Step 5: Solve for x
    x = 300,065,922,270.69/621,719.73
  6. Step 6: Final answer
    x = 482,638.57

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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.