Home / 1,538,535.80-2,308,230.30-640,400.60

Finding the Fourth Proportional to 1,538,535.80, 2,308,230.30 and 640,400.60

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Solution

The fourth proportional to 1,538,535.80, 2,308,230.30 and 640,400.60 is: 960,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,535.80 : 2,308,230.30 = 640,400.60 : x
  2. Step 2: Convert to fraction form
    1,538,535.80/2,308,230.30 = 640,400.60/x
  3. Step 3: Cross multiply
    1,538,535.80x = 2,308,230.30 × 640,400.60
  4. Step 4: Simplify right side
    1,538,535.80x = 1,478,192,069,058.18
  5. Step 5: Solve for x
    x = 1,478,192,069,058.18/1,538,535.80
  6. Step 6: Final answer
    x = 960,778.47

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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.