Home / 1,212,929.40-1,674,380.58-783,419

Finding the Fourth Proportional to 1,212,929.40, 1,674,380.58 and 783,419

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Solution

The fourth proportional to 1,212,929.40, 1,674,380.58 and 783,419 is: 1,081,465.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,929.40 : 1,674,380.58 = 783,419 : x
  2. Step 2: Convert to fraction form
    1,212,929.40/1,674,380.58 = 783,419/x
  3. Step 3: Cross multiply
    1,212,929.40x = 1,674,380.58 × 783,419
  4. Step 4: Simplify right side
    1,212,929.40x = 1,311,741,559,603.02
  5. Step 5: Solve for x
    x = 1,311,741,559,603.02/1,212,929.40
  6. Step 6: Final answer
    x = 1,081,465.71

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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.