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Finding the Fourth Proportional to 606,805.20, 909,989.10 and 307,186.20

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Solution

The fourth proportional to 606,805.20, 909,989.10 and 307,186.20 is: 460,668.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,805.20 : 909,989.10 = 307,186.20 : x
  2. Step 2: Convert to fraction form
    606,805.20/909,989.10 = 307,186.20/x
  3. Step 3: Cross multiply
    606,805.20x = 909,989.10 × 307,186.20
  4. Step 4: Simplify right side
    606,805.20x = 279,536,093,670.42
  5. Step 5: Solve for x
    x = 279,536,093,670.42/606,805.20
  6. Step 6: Final answer
    x = 460,668.59

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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.