Home / 812,859.14-1,121,697.58-445,263.16

Finding the Fourth Proportional to 812,859.14, 1,121,697.58 and 445,263.16

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Solution

The fourth proportional to 812,859.14, 1,121,697.58 and 445,263.16 is: 614,436.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,859.14 : 1,121,697.58 = 445,263.16 : x
  2. Step 2: Convert to fraction form
    812,859.14/1,121,697.58 = 445,263.16/x
  3. Step 3: Cross multiply
    812,859.14x = 1,121,697.58 × 445,263.16
  4. Step 4: Simplify right side
    812,859.14x = 499,450,609,035.15
  5. Step 5: Solve for x
    x = 499,450,609,035.15/812,859.14
  6. Step 6: Final answer
    x = 614,436.85

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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.