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Finding the Fourth Proportional to 606,421.20, 908,319.60 and 325,610.40

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Solution

The fourth proportional to 606,421.20, 908,319.60 and 325,610.40 is: 487,711.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,421.20 : 908,319.60 = 325,610.40 : x
  2. Step 2: Convert to fraction form
    606,421.20/908,319.60 = 325,610.40/x
  3. Step 3: Cross multiply
    606,421.20x = 908,319.60 × 325,610.40
  4. Step 4: Simplify right side
    606,421.20x = 295,758,308,283.84
  5. Step 5: Solve for x
    x = 295,758,308,283.84/606,421.20
  6. Step 6: Final answer
    x = 487,711.03

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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.