Home / 989,543.91-1,484,413.07-279,577.47

Finding the Fourth Proportional to 989,543.91, 1,484,413.07 and 279,577.47

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Solution

The fourth proportional to 989,543.91, 1,484,413.07 and 279,577.47 is: 419,393.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,543.91 : 1,484,413.07 = 279,577.47 : x
  2. Step 2: Convert to fraction form
    989,543.91/1,484,413.07 = 279,577.47/x
  3. Step 3: Cross multiply
    989,543.91x = 1,484,413.07 × 279,577.47
  4. Step 4: Simplify right side
    989,543.91x = 415,008,450,545.53
  5. Step 5: Solve for x
    x = 415,008,450,545.53/989,543.91
  6. Step 6: Final answer
    x = 419,393.67

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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.