Home / 837,122.40-1,256,374.80-388,533.60

Finding the Fourth Proportional to 837,122.40, 1,256,374.80 and 388,533.60

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Solution

The fourth proportional to 837,122.40, 1,256,374.80 and 388,533.60 is: 583,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,122.40 : 1,256,374.80 = 388,533.60 : x
  2. Step 2: Convert to fraction form
    837,122.40/1,256,374.80 = 388,533.60/x
  3. Step 3: Cross multiply
    837,122.40x = 1,256,374.80 × 388,533.60
  4. Step 4: Simplify right side
    837,122.40x = 488,143,823,993.28
  5. Step 5: Solve for x
    x = 488,143,823,993.28/837,122.40
  6. Step 6: Final answer
    x = 583,121.21

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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.