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Finding the Fourth Proportional to 479,697, 662,059.62 and 278,609.64

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Solution

The fourth proportional to 479,697, 662,059.62 and 278,609.64 is: 384,526.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,697 : 662,059.62 = 278,609.64 : x
  2. Step 2: Convert to fraction form
    479,697/662,059.62 = 278,609.64/x
  3. Step 3: Cross multiply
    479,697x = 662,059.62 × 278,609.64
  4. Step 4: Simplify right side
    479,697x = 184,456,192,386.74
  5. Step 5: Solve for x
    x = 184,456,192,386.74/479,697
  6. Step 6: Final answer
    x = 384,526.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.