Home / 680,522.20-1,021,172.10-260,099.80

Finding the Fourth Proportional to 680,522.20, 1,021,172.10 and 260,099.80

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Solution

The fourth proportional to 680,522.20, 1,021,172.10 and 260,099.80 is: 390,298.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,522.20 : 1,021,172.10 = 260,099.80 : x
  2. Step 2: Convert to fraction form
    680,522.20/1,021,172.10 = 260,099.80/x
  3. Step 3: Cross multiply
    680,522.20x = 1,021,172.10 × 260,099.80
  4. Step 4: Simplify right side
    680,522.20x = 265,606,658,975.58
  5. Step 5: Solve for x
    x = 265,606,658,975.58/680,522.20
  6. Step 6: Final answer
    x = 390,298.30

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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.