Home / 1,223,999.17-1,688,414.83-764,315.66

Finding the Fourth Proportional to 1,223,999.17, 1,688,414.83 and 764,315.66

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Solution

The fourth proportional to 1,223,999.17, 1,688,414.83 and 764,315.66 is: 1,054,315.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,999.17 : 1,688,414.83 = 764,315.66 : x
  2. Step 2: Convert to fraction form
    1,223,999.17/1,688,414.83 = 764,315.66/x
  3. Step 3: Cross multiply
    1,223,999.17x = 1,688,414.83 × 764,315.66
  4. Step 4: Simplify right side
    1,223,999.17x = 1,290,481,897,455.49
  5. Step 5: Solve for x
    x = 1,290,481,897,455.49/1,223,999.17
  6. Step 6: Final answer
    x = 1,054,315.99

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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.