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Finding the Fourth Proportional to 389,969.60, 584,954.40 and 364,308.80

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Solution

The fourth proportional to 389,969.60, 584,954.40 and 364,308.80 is: 546,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,969.60 : 584,954.40 = 364,308.80 : x
  2. Step 2: Convert to fraction form
    389,969.60/584,954.40 = 364,308.80/x
  3. Step 3: Cross multiply
    389,969.60x = 584,954.40 × 364,308.80
  4. Step 4: Simplify right side
    389,969.60x = 213,104,035,518.72
  5. Step 5: Solve for x
    x = 213,104,035,518.72/389,969.60
  6. Step 6: Final answer
    x = 546,463.20

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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.