Home / 411,986.80-617,980.20-299,137.60

Finding the Fourth Proportional to 411,986.80, 617,980.20 and 299,137.60

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Solution

The fourth proportional to 411,986.80, 617,980.20 and 299,137.60 is: 448,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,986.80 : 617,980.20 = 299,137.60 : x
  2. Step 2: Convert to fraction form
    411,986.80/617,980.20 = 299,137.60/x
  3. Step 3: Cross multiply
    411,986.80x = 617,980.20 × 299,137.60
  4. Step 4: Simplify right side
    411,986.80x = 184,861,113,875.52
  5. Step 5: Solve for x
    x = 184,861,113,875.52/411,986.80
  6. Step 6: Final answer
    x = 448,706.40

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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.