Home / 1,421,976.47-1,962,334.47-777,396.70

Finding the Fourth Proportional to 1,421,976.47, 1,962,334.47 and 777,396.70

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Solution

The fourth proportional to 1,421,976.47, 1,962,334.47 and 777,396.70 is: 1,072,811.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,976.47 : 1,962,334.47 = 777,396.70 : x
  2. Step 2: Convert to fraction form
    1,421,976.47/1,962,334.47 = 777,396.70/x
  3. Step 3: Cross multiply
    1,421,976.47x = 1,962,334.47 × 777,396.70
  4. Step 4: Simplify right side
    1,421,976.47x = 1,525,512,341,274.25
  5. Step 5: Solve for x
    x = 1,525,512,341,274.25/1,421,976.47
  6. Step 6: Final answer
    x = 1,072,811.24

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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.