Home / 1,379,290.78-1,903,391.40-798,538.40

Finding the Fourth Proportional to 1,379,290.78, 1,903,391.40 and 798,538.40

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Solution

The fourth proportional to 1,379,290.78, 1,903,391.40 and 798,538.40 is: 1,101,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,290.78 : 1,903,391.40 = 798,538.40 : x
  2. Step 2: Convert to fraction form
    1,379,290.78/1,903,391.40 = 798,538.40/x
  3. Step 3: Cross multiply
    1,379,290.78x = 1,903,391.40 × 798,538.40
  4. Step 4: Simplify right side
    1,379,290.78x = 1,519,931,123,129.76
  5. Step 5: Solve for x
    x = 1,519,931,123,129.76/1,379,290.78
  6. Step 6: Final answer
    x = 1,101,965.70

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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.