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Finding the Fourth Proportional to 606,430.20, 909,645.30 and 290,724.60

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Solution

The fourth proportional to 606,430.20, 909,645.30 and 290,724.60 is: 436,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,430.20 : 909,645.30 = 290,724.60 : x
  2. Step 2: Convert to fraction form
    606,430.20/909,645.30 = 290,724.60/x
  3. Step 3: Cross multiply
    606,430.20x = 909,645.30 × 290,724.60
  4. Step 4: Simplify right side
    606,430.20x = 264,456,265,984.38
  5. Step 5: Solve for x
    x = 264,456,265,984.38/606,430.20
  6. Step 6: Final answer
    x = 436,086.90

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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.