Home / 989,813.20-1,484,719.80-740,981.20

Finding the Fourth Proportional to 989,813.20, 1,484,719.80 and 740,981.20

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Solution

The fourth proportional to 989,813.20, 1,484,719.80 and 740,981.20 is: 1,111,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,813.20 : 1,484,719.80 = 740,981.20 : x
  2. Step 2: Convert to fraction form
    989,813.20/1,484,719.80 = 740,981.20/x
  3. Step 3: Cross multiply
    989,813.20x = 1,484,719.80 × 740,981.20
  4. Step 4: Simplify right side
    989,813.20x = 1,100,149,459,067.76
  5. Step 5: Solve for x
    x = 1,100,149,459,067.76/989,813.20
  6. Step 6: Final answer
    x = 1,111,471.80

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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.