Home / 1,421,995.83-1,962,354.09-777,415.85

Finding the Fourth Proportional to 1,421,995.83, 1,962,354.09 and 777,415.85

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Solution

The fourth proportional to 1,421,995.83, 1,962,354.09 and 777,415.85 is: 1,072,833.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,995.83 : 1,962,354.09 = 777,415.85 : x
  2. Step 2: Convert to fraction form
    1,421,995.83/1,962,354.09 = 777,415.85/x
  3. Step 3: Cross multiply
    1,421,995.83x = 1,962,354.09 × 777,415.85
  4. Step 4: Simplify right side
    1,421,995.83x = 1,525,565,178,859.81
  5. Step 5: Solve for x
    x = 1,525,565,178,859.81/1,421,995.83
  6. Step 6: Final answer
    x = 1,072,833.79

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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.