Finding the Fourth Proportional to 778,576.68, 1,074,432.90 and 420,880.68
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Solution
The fourth proportional to 778,576.68, 1,074,432.90 and 420,880.68 is: 580,813.76
Step by Step Solution
- Step 1: Write the proportion equation
778,576.68 : 1,074,432.90 = 420,880.68 : x - Step 2: Convert to fraction form
778,576.68/1,074,432.90 = 420,880.68/x - Step 3: Cross multiply
778,576.68x = 1,074,432.90 × 420,880.68 - Step 4: Simplify right side
778,576.68x = 452,208,049,566.37 - Step 5: Solve for x
x = 452,208,049,566.37/778,576.68 - Step 6: Final answer
x = 580,813.76
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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.