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Finding the Fourth Proportional to 831,709.10, 1,245,230.85 and 808,381.10

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Solution

The fourth proportional to 831,709.10, 1,245,230.85 and 808,381.10 is: 1,210,304.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,709.10 : 1,245,230.85 = 808,381.10 : x
  2. Step 2: Convert to fraction form
    831,709.10/1,245,230.85 = 808,381.10/x
  3. Step 3: Cross multiply
    831,709.10x = 1,245,230.85 × 808,381.10
  4. Step 4: Simplify right side
    831,709.10x = 1,006,621,084,276.94
  5. Step 5: Solve for x
    x = 1,006,621,084,276.94/831,709.10
  6. Step 6: Final answer
    x = 1,210,304.28

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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.