Home / 1,280,589.08-1,921,215.74-681,057.24

Finding the Fourth Proportional to 1,280,589.08, 1,921,215.74 and 681,057.24

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Solution

The fourth proportional to 1,280,589.08, 1,921,215.74 and 681,057.24 is: 1,021,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,589.08 : 1,921,215.74 = 681,057.24 : x
  2. Step 2: Convert to fraction form
    1,280,589.08/1,921,215.74 = 681,057.24/x
  3. Step 3: Cross multiply
    1,280,589.08x = 1,921,215.74 × 681,057.24
  4. Step 4: Simplify right side
    1,280,589.08x = 1,308,457,889,328.96
  5. Step 5: Solve for x
    x = 1,308,457,889,328.96/1,280,589.08
  6. Step 6: Final answer
    x = 1,021,762.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.