Home / 1,381,931.32-1,907,219.62-770,139.94

Finding the Fourth Proportional to 1,381,931.32, 1,907,219.62 and 770,139.94

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Solution

The fourth proportional to 1,381,931.32, 1,907,219.62 and 770,139.94 is: 1,062,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,931.32 : 1,907,219.62 = 770,139.94 : x
  2. Step 2: Convert to fraction form
    1,381,931.32/1,907,219.62 = 770,139.94/x
  3. Step 3: Cross multiply
    1,381,931.32x = 1,907,219.62 × 770,139.94
  4. Step 4: Simplify right side
    1,381,931.32x = 1,468,826,003,713.62
  5. Step 5: Solve for x
    x = 1,468,826,003,713.62/1,381,931.32
  6. Step 6: Final answer
    x = 1,062,879.16

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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.