Home / 764,440.00-1,054,927.86-420,281.78

Finding the Fourth Proportional to 764,440.00, 1,054,927.86 and 420,281.78

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Solution

The fourth proportional to 764,440.00, 1,054,927.86 and 420,281.78 is: 579,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,440.00 : 1,054,927.86 = 420,281.78 : x
  2. Step 2: Convert to fraction form
    764,440.00/1,054,927.86 = 420,281.78/x
  3. Step 3: Cross multiply
    764,440.00x = 1,054,927.86 × 420,281.78
  4. Step 4: Simplify right side
    764,440.00x = 443,366,953,497.75
  5. Step 5: Solve for x
    x = 443,366,953,497.75/764,440.00
  6. Step 6: Final answer
    x = 579,989.22

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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.