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Finding the Fourth Proportional to 808,771.80, 1,213,643.70 and 335,407.80

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Solution

The fourth proportional to 808,771.80, 1,213,643.70 and 335,407.80 is: 503,313.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,771.80 : 1,213,643.70 = 335,407.80 : x
  2. Step 2: Convert to fraction form
    808,771.80/1,213,643.70 = 335,407.80/x
  3. Step 3: Cross multiply
    808,771.80x = 1,213,643.70 × 335,407.80
  4. Step 4: Simplify right side
    808,771.80x = 407,065,563,400.86
  5. Step 5: Solve for x
    x = 407,065,563,400.86/808,771.80
  6. Step 6: Final answer
    x = 503,313.25

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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.