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Finding the Fourth Proportional to 505,425.60, 697,476.96 and 275,989.86

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Solution

The fourth proportional to 505,425.60, 697,476.96 and 275,989.86 is: 380,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,425.60 : 697,476.96 = 275,989.86 : x
  2. Step 2: Convert to fraction form
    505,425.60/697,476.96 = 275,989.86/x
  3. Step 3: Cross multiply
    505,425.60x = 697,476.96 × 275,989.86
  4. Step 4: Simplify right side
    505,425.60x = 192,496,568,543.63
  5. Step 5: Solve for x
    x = 192,496,568,543.63/505,425.60
  6. Step 6: Final answer
    x = 380,860.35

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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.