Home / 680,005.20-1,019,716.20-342,915.60

Finding the Fourth Proportional to 680,005.20, 1,019,716.20 and 342,915.60

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Solution

The fourth proportional to 680,005.20, 1,019,716.20 and 342,915.60 is: 514,226.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,005.20 : 1,019,716.20 = 342,915.60 : x
  2. Step 2: Convert to fraction form
    680,005.20/1,019,716.20 = 342,915.60/x
  3. Step 3: Cross multiply
    680,005.20x = 1,019,716.20 × 342,915.60
  4. Step 4: Simplify right side
    680,005.20x = 349,676,592,552.72
  5. Step 5: Solve for x
    x = 349,676,592,552.72/680,005.20
  6. Step 6: Final answer
    x = 514,226.35

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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.