Home / 831,640.80-1,244,836.80-653,181.60

Finding the Fourth Proportional to 831,640.80, 1,244,836.80 and 653,181.60

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Solution

The fourth proportional to 831,640.80, 1,244,836.80 and 653,181.60 is: 977,711.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,640.80 : 1,244,836.80 = 653,181.60 : x
  2. Step 2: Convert to fraction form
    831,640.80/1,244,836.80 = 653,181.60/x
  3. Step 3: Cross multiply
    831,640.80x = 1,244,836.80 × 653,181.60
  4. Step 4: Simplify right side
    831,640.80x = 813,104,492,762.88
  5. Step 5: Solve for x
    x = 813,104,492,762.88/831,640.80
  6. Step 6: Final answer
    x = 977,711.16

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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.