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Finding the Fourth Proportional to 630,413.67, 870,043.44 and 351,039

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Solution

The fourth proportional to 630,413.67, 870,043.44 and 351,039 is: 484,474.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,413.67 : 870,043.44 = 351,039 : x
  2. Step 2: Convert to fraction form
    630,413.67/870,043.44 = 351,039/x
  3. Step 3: Cross multiply
    630,413.67x = 870,043.44 × 351,039
  4. Step 4: Simplify right side
    630,413.67x = 305,419,179,134.16
  5. Step 5: Solve for x
    x = 305,419,179,134.16/630,413.67
  6. Step 6: Final answer
    x = 484,474.23

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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.