Home / 679,905.40-1,020,003.90-206,638.60

Finding the Fourth Proportional to 679,905.40, 1,020,003.90 and 206,638.60

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Solution

The fourth proportional to 679,905.40, 1,020,003.90 and 206,638.60 is: 310,002.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,905.40 : 1,020,003.90 = 206,638.60 : x
  2. Step 2: Convert to fraction form
    679,905.40/1,020,003.90 = 206,638.60/x
  3. Step 3: Cross multiply
    679,905.40x = 1,020,003.90 × 206,638.60
  4. Step 4: Simplify right side
    679,905.40x = 210,772,177,890.54
  5. Step 5: Solve for x
    x = 210,772,177,890.54/679,905.40
  6. Step 6: Final answer
    x = 310,002.21

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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.