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Finding the Fourth Proportional to 831,717.60, 1,245,243.60 and 808,389.60

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Solution

The fourth proportional to 831,717.60, 1,245,243.60 and 808,389.60 is: 1,210,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,717.60 : 1,245,243.60 = 808,389.60 : x
  2. Step 2: Convert to fraction form
    831,717.60/1,245,243.60 = 808,389.60/x
  3. Step 3: Cross multiply
    831,717.60x = 1,245,243.60 × 808,389.60
  4. Step 4: Simplify right side
    831,717.60x = 1,006,641,975,706.56
  5. Step 5: Solve for x
    x = 1,006,641,975,706.56/831,717.60
  6. Step 6: Final answer
    x = 1,210,317.03

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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.