Home / 1,308,389.91-1,805,313.47-764,420.64

Finding the Fourth Proportional to 1,308,389.91, 1,805,313.47 and 764,420.64

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Solution

The fourth proportional to 1,308,389.91, 1,805,313.47 and 764,420.64 is: 1,054,745.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,389.91 : 1,805,313.47 = 764,420.64 : x
  2. Step 2: Convert to fraction form
    1,308,389.91/1,805,313.47 = 764,420.64/x
  3. Step 3: Cross multiply
    1,308,389.91x = 1,805,313.47 × 764,420.64
  4. Step 4: Simplify right side
    1,308,389.91x = 1,380,018,874,315.92
  5. Step 5: Solve for x
    x = 1,380,018,874,315.92/1,308,389.91
  6. Step 6: Final answer
    x = 1,054,745.89

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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.