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Finding the Fourth Proportional to 505,452.60, 697,552.92 and 276,031.20

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Solution

The fourth proportional to 505,452.60, 697,552.92 and 276,031.20 is: 380,938.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,452.60 : 697,552.92 = 276,031.20 : x
  2. Step 2: Convert to fraction form
    505,452.60/697,552.92 = 276,031.20/x
  3. Step 3: Cross multiply
    505,452.60x = 697,552.92 × 276,031.20
  4. Step 4: Simplify right side
    505,452.60x = 192,546,369,571.10
  5. Step 5: Solve for x
    x = 192,546,369,571.10/505,452.60
  6. Step 6: Final answer
    x = 380,938.53

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Double scale
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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.