Home / 679,904.40-1,020,002.40-206,637.60

Finding the Fourth Proportional to 679,904.40, 1,020,002.40 and 206,637.60

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Solution

The fourth proportional to 679,904.40, 1,020,002.40 and 206,637.60 is: 310,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,904.40 : 1,020,002.40 = 206,637.60 : x
  2. Step 2: Convert to fraction form
    679,904.40/1,020,002.40 = 206,637.60/x
  3. Step 3: Cross multiply
    679,904.40x = 1,020,002.40 × 206,637.60
  4. Step 4: Simplify right side
    679,904.40x = 210,770,847,930.24
  5. Step 5: Solve for x
    x = 210,770,847,930.24/679,904.40
  6. Step 6: Final answer
    x = 310,000.71

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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.