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Finding the Fourth Proportional to 606,958.80, 909,344.70 and 290,718.60

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Solution

The fourth proportional to 606,958.80, 909,344.70 and 290,718.60 is: 435,554.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,958.80 : 909,344.70 = 290,718.60 : x
  2. Step 2: Convert to fraction form
    606,958.80/909,344.70 = 290,718.60/x
  3. Step 3: Cross multiply
    606,958.80x = 909,344.70 × 290,718.60
  4. Step 4: Simplify right side
    606,958.80x = 264,363,418,101.42
  5. Step 5: Solve for x
    x = 264,363,418,101.42/606,958.80
  6. Step 6: Final answer
    x = 435,554.14

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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.