Home / 1,290,319.42-1,780,445.44-738,949.38

Finding the Fourth Proportional to 1,290,319.42, 1,780,445.44 and 738,949.38

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Solution

The fourth proportional to 1,290,319.42, 1,780,445.44 and 738,949.38 is: 1,019,638.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,319.42 : 1,780,445.44 = 738,949.38 : x
  2. Step 2: Convert to fraction form
    1,290,319.42/1,780,445.44 = 738,949.38/x
  3. Step 3: Cross multiply
    1,290,319.42x = 1,780,445.44 × 738,949.38
  4. Step 4: Simplify right side
    1,290,319.42x = 1,315,659,054,011.83
  5. Step 5: Solve for x
    x = 1,315,659,054,011.83/1,290,319.42
  6. Step 6: Final answer
    x = 1,019,638.26

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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.