Home / 389,435.20-584,152.80-365,815.60

Finding the Fourth Proportional to 389,435.20, 584,152.80 and 365,815.60

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Solution

The fourth proportional to 389,435.20, 584,152.80 and 365,815.60 is: 548,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,435.20 : 584,152.80 = 365,815.60 : x
  2. Step 2: Convert to fraction form
    389,435.20/584,152.80 = 365,815.60/x
  3. Step 3: Cross multiply
    389,435.20x = 584,152.80 × 365,815.60
  4. Step 4: Simplify right side
    389,435.20x = 213,692,207,023.68
  5. Step 5: Solve for x
    x = 213,692,207,023.68/389,435.20
  6. Step 6: Final answer
    x = 548,723.40

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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.