Home / 1,431,085.81-1,974,945.78-786,528.85

Finding the Fourth Proportional to 1,431,085.81, 1,974,945.78 and 786,528.85

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Solution

The fourth proportional to 1,431,085.81, 1,974,945.78 and 786,528.85 is: 1,085,435.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,085.81 : 1,974,945.78 = 786,528.85 : x
  2. Step 2: Convert to fraction form
    1,431,085.81/1,974,945.78 = 786,528.85/x
  3. Step 3: Cross multiply
    1,431,085.81x = 1,974,945.78 × 786,528.85
  4. Step 4: Simplify right side
    1,431,085.81x = 1,553,351,833,155.75
  5. Step 5: Solve for x
    x = 1,553,351,833,155.75/1,431,085.81
  6. Step 6: Final answer
    x = 1,085,435.84

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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.