Home / 389,623.20-584,434.80-256,653.60

Finding the Fourth Proportional to 389,623.20, 584,434.80 and 256,653.60

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Solution

The fourth proportional to 389,623.20, 584,434.80 and 256,653.60 is: 384,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,623.20 : 584,434.80 = 256,653.60 : x
  2. Step 2: Convert to fraction form
    389,623.20/584,434.80 = 256,653.60/x
  3. Step 3: Cross multiply
    389,623.20x = 584,434.80 × 256,653.60
  4. Step 4: Simplify right side
    389,623.20x = 149,997,295,385.28
  5. Step 5: Solve for x
    x = 149,997,295,385.28/389,623.20
  6. Step 6: Final answer
    x = 384,980.40

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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.