Home / 1,320,372.76-1,821,834.12-776,309.98

Finding the Fourth Proportional to 1,320,372.76, 1,821,834.12 and 776,309.98

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Solution

The fourth proportional to 1,320,372.76, 1,821,834.12 and 776,309.98 is: 1,071,142.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,372.76 : 1,821,834.12 = 776,309.98 : x
  2. Step 2: Convert to fraction form
    1,320,372.76/1,821,834.12 = 776,309.98/x
  3. Step 3: Cross multiply
    1,320,372.76x = 1,821,834.12 × 776,309.98
  4. Step 4: Simplify right side
    1,320,372.76x = 1,414,308,009,260.52
  5. Step 5: Solve for x
    x = 1,414,308,009,260.52/1,320,372.76
  6. Step 6: Final answer
    x = 1,071,142.98

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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.