Home / 919,674.90-1,378,786.59-387,278.10

Finding the Fourth Proportional to 919,674.90, 1,378,786.59 and 387,278.10

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Solution

The fourth proportional to 919,674.90, 1,378,786.59 and 387,278.10 is: 580,611.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,674.90 : 1,378,786.59 = 387,278.10 : x
  2. Step 2: Convert to fraction form
    919,674.90/1,378,786.59 = 387,278.10/x
  3. Step 3: Cross multiply
    919,674.90x = 1,378,786.59 × 387,278.10
  4. Step 4: Simplify right side
    919,674.90x = 533,973,850,880.68
  5. Step 5: Solve for x
    x = 533,973,850,880.68/919,674.90
  6. Step 6: Final answer
    x = 580,611.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.