Home / 1,421,997.82-1,962,356.86-777,417.86

Finding the Fourth Proportional to 1,421,997.82, 1,962,356.86 and 777,417.86

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Solution

The fourth proportional to 1,421,997.82, 1,962,356.86 and 777,417.86 is: 1,072,836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,997.82 : 1,962,356.86 = 777,417.86 : x
  2. Step 2: Convert to fraction form
    1,421,997.82/1,962,356.86 = 777,417.86/x
  3. Step 3: Cross multiply
    1,421,997.82x = 1,962,356.86 × 777,417.86
  4. Step 4: Simplify right side
    1,421,997.82x = 1,525,571,270,657.52
  5. Step 5: Solve for x
    x = 1,525,571,270,657.52/1,421,997.82
  6. Step 6: Final answer
    x = 1,072,836.57

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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.