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Finding the Fourth Proportional to 989,869.90, 1,484,804.85 and 989,869.90

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Solution

The fourth proportional to 989,869.90, 1,484,804.85 and 989,869.90 is: 1,484,804.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,869.90 : 1,484,804.85 = 989,869.90 : x
  2. Step 2: Convert to fraction form
    989,869.90/1,484,804.85 = 989,869.90/x
  3. Step 3: Cross multiply
    989,869.90x = 1,484,804.85 × 989,869.90
  4. Step 4: Simplify right side
    989,869.90x = 1,469,763,628,389.02
  5. Step 5: Solve for x
    x = 1,469,763,628,389.02/989,869.90
  6. Step 6: Final answer
    x = 1,484,804.85

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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.