Home / 1,426,720.72-1,968,849.21-782,146.21

Finding the Fourth Proportional to 1,426,720.72, 1,968,849.21 and 782,146.21

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Solution

The fourth proportional to 1,426,720.72, 1,968,849.21 and 782,146.21 is: 1,079,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,720.72 : 1,968,849.21 = 782,146.21 : x
  2. Step 2: Convert to fraction form
    1,426,720.72/1,968,849.21 = 782,146.21/x
  3. Step 3: Cross multiply
    1,426,720.72x = 1,968,849.21 × 782,146.21
  4. Step 4: Simplify right side
    1,426,720.72x = 1,539,927,947,662.99
  5. Step 5: Solve for x
    x = 1,539,927,947,662.99/1,426,720.72
  6. Step 6: Final answer
    x = 1,079,347.85

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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.