Home / 1,212,014.90-1,672,585.63-668,138.78

Finding the Fourth Proportional to 1,212,014.90, 1,672,585.63 and 668,138.78

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Solution

The fourth proportional to 1,212,014.90, 1,672,585.63 and 668,138.78 is: 922,034.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,014.90 : 1,672,585.63 = 668,138.78 : x
  2. Step 2: Convert to fraction form
    1,212,014.90/1,672,585.63 = 668,138.78/x
  3. Step 3: Cross multiply
    1,212,014.90x = 1,672,585.63 × 668,138.78
  4. Step 4: Simplify right side
    1,212,014.90x = 1,117,519,318,512.65
  5. Step 5: Solve for x
    x = 1,117,519,318,512.65/1,212,014.90
  6. Step 6: Final answer
    x = 922,034.31

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1.5x scale

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.