Home / 679,310.40-1,018,771.20-205,881.60

Finding the Fourth Proportional to 679,310.40, 1,018,771.20 and 205,881.60

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Solution

The fourth proportional to 679,310.40, 1,018,771.20 and 205,881.60 is: 308,763.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,310.40 : 1,018,771.20 = 205,881.60 : x
  2. Step 2: Convert to fraction form
    679,310.40/1,018,771.20 = 205,881.60/x
  3. Step 3: Cross multiply
    679,310.40x = 1,018,771.20 × 205,881.60
  4. Step 4: Simplify right side
    679,310.40x = 209,746,244,689.92
  5. Step 5: Solve for x
    x = 209,746,244,689.92/679,310.40
  6. Step 6: Final answer
    x = 308,763.48

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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.