Home / 621,084.16-857,099.52-352,821.76

Finding the Fourth Proportional to 621,084.16, 857,099.52 and 352,821.76

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Solution

The fourth proportional to 621,084.16, 857,099.52 and 352,821.76 is: 486,895.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,084.16 : 857,099.52 = 352,821.76 : x
  2. Step 2: Convert to fraction form
    621,084.16/857,099.52 = 352,821.76/x
  3. Step 3: Cross multiply
    621,084.16x = 857,099.52 × 352,821.76
  4. Step 4: Simplify right side
    621,084.16x = 302,403,361,141.56
  5. Step 5: Solve for x
    x = 302,403,361,141.56/621,084.16
  6. Step 6: Final answer
    x = 486,895.95

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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.