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Finding the Fourth Proportional to 1,351,741.46, 1,865,868.90 and 779,009.90

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Solution

The fourth proportional to 1,351,741.46, 1,865,868.90 and 779,009.90 is: 1,075,302.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,741.46 : 1,865,868.90 = 779,009.90 : x
  2. Step 2: Convert to fraction form
    1,351,741.46/1,865,868.90 = 779,009.90/x
  3. Step 3: Cross multiply
    1,351,741.46x = 1,865,868.90 × 779,009.90
  4. Step 4: Simplify right side
    1,351,741.46x = 1,453,530,345,202.11
  5. Step 5: Solve for x
    x = 1,453,530,345,202.11/1,351,741.46
  6. Step 6: Final answer
    x = 1,075,302.04

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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.