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Finding the Fourth Proportional to 389,763.62, 584,830.48 and 270,004.87

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Solution

The fourth proportional to 389,763.62, 584,830.48 and 270,004.87 is: 405,135.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,763.62 : 584,830.48 = 270,004.87 : x
  2. Step 2: Convert to fraction form
    389,763.62/584,830.48 = 270,004.87/x
  3. Step 3: Cross multiply
    389,763.62x = 584,830.48 × 270,004.87
  4. Step 4: Simplify right side
    389,763.62x = 157,907,076,641.89
  5. Step 5: Solve for x
    x = 157,907,076,641.89/389,763.62
  6. Step 6: Final answer
    x = 405,135.49

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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.