Home / 680,610.60-1,020,915.90-326,316.60

Finding the Fourth Proportional to 680,610.60, 1,020,915.90 and 326,316.60

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Solution

The fourth proportional to 680,610.60, 1,020,915.90 and 326,316.60 is: 489,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,610.60 : 1,020,915.90 = 326,316.60 : x
  2. Step 2: Convert to fraction form
    680,610.60/1,020,915.90 = 326,316.60/x
  3. Step 3: Cross multiply
    680,610.60x = 1,020,915.90 × 326,316.60
  4. Step 4: Simplify right side
    680,610.60x = 333,141,805,373.94
  5. Step 5: Solve for x
    x = 333,141,805,373.94/680,610.60
  6. Step 6: Final answer
    x = 489,474.90

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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.