Home / 820,257.40-1,230,386.10-788,764.60

Finding the Fourth Proportional to 820,257.40, 1,230,386.10 and 788,764.60

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Solution

The fourth proportional to 820,257.40, 1,230,386.10 and 788,764.60 is: 1,183,146.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,257.40 : 1,230,386.10 = 788,764.60 : x
  2. Step 2: Convert to fraction form
    820,257.40/1,230,386.10 = 788,764.60/x
  3. Step 3: Cross multiply
    820,257.40x = 1,230,386.10 × 788,764.60
  4. Step 4: Simplify right side
    820,257.40x = 970,485,000,012.06
  5. Step 5: Solve for x
    x = 970,485,000,012.06/820,257.40
  6. Step 6: Final answer
    x = 1,183,146.90

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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.