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Finding the Fourth Proportional to 389,975.60, 585,400.80 and 301,620.80

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Solution

The fourth proportional to 389,975.60, 585,400.80 and 301,620.80 is: 452,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,975.60 : 585,400.80 = 301,620.80 : x
  2. Step 2: Convert to fraction form
    389,975.60/585,400.80 = 301,620.80/x
  3. Step 3: Cross multiply
    389,975.60x = 585,400.80 × 301,620.80
  4. Step 4: Simplify right side
    389,975.60x = 176,569,057,616.64
  5. Step 5: Solve for x
    x = 176,569,057,616.64/389,975.60
  6. Step 6: Final answer
    x = 452,769.50

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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.