Home / 1,426,715.72-1,968,842.32-782,141.21

Finding the Fourth Proportional to 1,426,715.72, 1,968,842.32 and 782,141.21

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Solution

The fourth proportional to 1,426,715.72, 1,968,842.32 and 782,141.21 is: 1,079,340.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,715.72 : 1,968,842.32 = 782,141.21 : x
  2. Step 2: Convert to fraction form
    1,426,715.72/1,968,842.32 = 782,141.21/x
  3. Step 3: Cross multiply
    1,426,715.72x = 1,968,842.32 × 782,141.21
  4. Step 4: Simplify right side
    1,426,715.72x = 1,539,912,702,664.44
  5. Step 5: Solve for x
    x = 1,539,912,702,664.44/1,426,715.72
  6. Step 6: Final answer
    x = 1,079,340.96

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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.