Home / 411,826.80-617,740.20-318,399.60

Finding the Fourth Proportional to 411,826.80, 617,740.20 and 318,399.60

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Solution

The fourth proportional to 411,826.80, 617,740.20 and 318,399.60 is: 477,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,826.80 : 617,740.20 = 318,399.60 : x
  2. Step 2: Convert to fraction form
    411,826.80/617,740.20 = 318,399.60/x
  3. Step 3: Cross multiply
    411,826.80x = 617,740.20 × 318,399.60
  4. Step 4: Simplify right side
    411,826.80x = 196,688,232,583.92
  5. Step 5: Solve for x
    x = 196,688,232,583.92/411,826.80
  6. Step 6: Final answer
    x = 477,599.40

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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.