Finding the Fourth Proportional to 643,315.76, 887,776.62 and 356,835.84
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Solution
The fourth proportional to 643,315.76, 887,776.62 and 356,835.84 is: 492,433.95
Step by Step Solution
- Step 1: Write the proportion equation
643,315.76 : 887,776.62 = 356,835.84 : x - Step 2: Convert to fraction form
643,315.76/887,776.62 = 356,835.84/x - Step 3: Cross multiply
643,315.76x = 887,776.62 × 356,835.84 - Step 4: Simplify right side
643,315.76x = 316,790,515,930.06 - Step 5: Solve for x
x = 316,790,515,930.06/643,315.76 - Step 6: Final answer
x = 492,433.95
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.