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Finding the Fourth Proportional to 830,450.70, 1,245,676.05 and 788,978.70

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Solution

The fourth proportional to 830,450.70, 1,245,676.05 and 788,978.70 is: 1,183,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,450.70 : 1,245,676.05 = 788,978.70 : x
  2. Step 2: Convert to fraction form
    830,450.70/1,245,676.05 = 788,978.70/x
  3. Step 3: Cross multiply
    830,450.70x = 1,245,676.05 × 788,978.70
  4. Step 4: Simplify right side
    830,450.70x = 982,811,870,550.14
  5. Step 5: Solve for x
    x = 982,811,870,550.14/830,450.70
  6. Step 6: Final answer
    x = 1,183,468.05

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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.