Finding the Fourth Proportional to 838,829.94, 1,257,765.12 and 389,319.36
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Solution
The fourth proportional to 838,829.94, 1,257,765.12 and 389,319.36 is: 583,756.36
Step by Step Solution
- Step 1: Write the proportion equation
838,829.94 : 1,257,765.12 = 389,319.36 : x - Step 2: Convert to fraction form
838,829.94/1,257,765.12 = 389,319.36/x - Step 3: Cross multiply
838,829.94x = 1,257,765.12 × 389,319.36 - Step 4: Simplify right side
838,829.94x = 489,672,311,548.72 - Step 5: Solve for x
x = 489,672,311,548.72/838,829.94 - Step 6: Final answer
x = 583,756.36
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.