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Finding the Fourth Proportional to 575,286.66, 793,922.76 and 320,639.67

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Solution

The fourth proportional to 575,286.66, 793,922.76 and 320,639.67 is: 442,497.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,286.66 : 793,922.76 = 320,639.67 : x
  2. Step 2: Convert to fraction form
    575,286.66/793,922.76 = 320,639.67/x
  3. Step 3: Cross multiply
    575,286.66x = 793,922.76 × 320,639.67
  4. Step 4: Simplify right side
    575,286.66x = 254,563,131,771.89
  5. Step 5: Solve for x
    x = 254,563,131,771.89/575,286.66
  6. Step 6: Final answer
    x = 442,497.89

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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.