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Finding the Fourth Proportional to 622,907.67, 859,639.05 and 347,265.45

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Solution

The fourth proportional to 622,907.67, 859,639.05 and 347,265.45 is: 479,241.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,907.67 : 859,639.05 = 347,265.45 : x
  2. Step 2: Convert to fraction form
    622,907.67/859,639.05 = 347,265.45/x
  3. Step 3: Cross multiply
    622,907.67x = 859,639.05 × 347,265.45
  4. Step 4: Simplify right side
    622,907.67x = 298,522,941,535.82
  5. Step 5: Solve for x
    x = 298,522,941,535.82/622,907.67
  6. Step 6: Final answer
    x = 479,241.08

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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.