Home / 1,400,533.90-2,100,800.85-389,653.90

Finding the Fourth Proportional to 1,400,533.90, 2,100,800.85 and 389,653.90

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Solution

The fourth proportional to 1,400,533.90, 2,100,800.85 and 389,653.90 is: 584,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,533.90 : 2,100,800.85 = 389,653.90 : x
  2. Step 2: Convert to fraction form
    1,400,533.90/2,100,800.85 = 389,653.90/x
  3. Step 3: Cross multiply
    1,400,533.90x = 2,100,800.85 × 389,653.90
  4. Step 4: Simplify right side
    1,400,533.90x = 818,585,244,325.82
  5. Step 5: Solve for x
    x = 818,585,244,325.82/1,400,533.90
  6. Step 6: Final answer
    x = 584,480.85

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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.