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Finding the Fourth Proportional to 788,999.90, 1,183,499.85 and 788,999.90

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Solution

The fourth proportional to 788,999.90, 1,183,499.85 and 788,999.90 is: 1,183,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,999.90 : 1,183,499.85 = 788,999.90 : x
  2. Step 2: Convert to fraction form
    788,999.90/1,183,499.85 = 788,999.90/x
  3. Step 3: Cross multiply
    788,999.90x = 1,183,499.85 × 788,999.90
  4. Step 4: Simplify right side
    788,999.90x = 933,781,263,300.02
  5. Step 5: Solve for x
    x = 933,781,263,300.02/788,999.90
  6. Step 6: Final answer
    x = 1,183,499.85

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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.