Home / 989,647.20-1,484,470.80-740,815.20

Finding the Fourth Proportional to 989,647.20, 1,484,470.80 and 740,815.20

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Solution

The fourth proportional to 989,647.20, 1,484,470.80 and 740,815.20 is: 1,111,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,647.20 : 1,484,470.80 = 740,815.20 : x
  2. Step 2: Convert to fraction form
    989,647.20/1,484,470.80 = 740,815.20/x
  3. Step 3: Cross multiply
    989,647.20x = 1,484,470.80 × 740,815.20
  4. Step 4: Simplify right side
    989,647.20x = 1,099,718,532,596.16
  5. Step 5: Solve for x
    x = 1,099,718,532,596.16/989,647.20
  6. Step 6: Final answer
    x = 1,111,222.80

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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.