Home / 1,421,962.70-1,962,315.45-777,382.89

Finding the Fourth Proportional to 1,421,962.70, 1,962,315.45 and 777,382.89

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Solution

The fourth proportional to 1,421,962.70, 1,962,315.45 and 777,382.89 is: 1,072,792.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,962.70 : 1,962,315.45 = 777,382.89 : x
  2. Step 2: Convert to fraction form
    1,421,962.70/1,962,315.45 = 777,382.89/x
  3. Step 3: Cross multiply
    1,421,962.70x = 1,962,315.45 × 777,382.89
  4. Step 4: Simplify right side
    1,421,962.70x = 1,525,470,451,725.74
  5. Step 5: Solve for x
    x = 1,525,470,451,725.74/1,421,962.70
  6. Step 6: Final answer
    x = 1,072,792.17

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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.