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Finding the Fourth Proportional to 405,090.80, 606,469.80 and 363,100.40

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Solution

The fourth proportional to 405,090.80, 606,469.80 and 363,100.40 is: 543,605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,090.80 : 606,469.80 = 363,100.40 : x
  2. Step 2: Convert to fraction form
    405,090.80/606,469.80 = 363,100.40/x
  3. Step 3: Cross multiply
    405,090.80x = 606,469.80 × 363,100.40
  4. Step 4: Simplify right side
    405,090.80x = 220,209,426,967.92
  5. Step 5: Solve for x
    x = 220,209,426,967.92/405,090.80
  6. Step 6: Final answer
    x = 543,605.11

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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.