Home / 403,938.80-605,616.60-263,776.40

Finding the Fourth Proportional to 403,938.80, 605,616.60 and 263,776.40

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Solution

The fourth proportional to 403,938.80, 605,616.60 and 263,776.40 is: 395,474.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,938.80 : 605,616.60 = 263,776.40 : x
  2. Step 2: Convert to fraction form
    403,938.80/605,616.60 = 263,776.40/x
  3. Step 3: Cross multiply
    403,938.80x = 605,616.60 × 263,776.40
  4. Step 4: Simplify right side
    403,938.80x = 159,747,366,528.24
  5. Step 5: Solve for x
    x = 159,747,366,528.24/403,938.80
  6. Step 6: Final answer
    x = 395,474.18

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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.