Home / 989,413.60-1,484,120.40-889,686.40

Finding the Fourth Proportional to 989,413.60, 1,484,120.40 and 889,686.40

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Solution

The fourth proportional to 989,413.60, 1,484,120.40 and 889,686.40 is: 1,334,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,413.60 : 1,484,120.40 = 889,686.40 : x
  2. Step 2: Convert to fraction form
    989,413.60/1,484,120.40 = 889,686.40/x
  3. Step 3: Cross multiply
    989,413.60x = 1,484,120.40 × 889,686.40
  4. Step 4: Simplify right side
    989,413.60x = 1,320,401,735,842.56
  5. Step 5: Solve for x
    x = 1,320,401,735,842.56/989,413.60
  6. Step 6: Final answer
    x = 1,334,529.60

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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.