Finding the Fourth Proportional to 1,137,689.90, 1,706,789.39 and 427,724.09
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Solution
The fourth proportional to 1,137,689.90, 1,706,789.39 and 427,724.09 is: 641,681.82
Step by Step Solution
- Step 1: Write the proportion equation
1,137,689.90 : 1,706,789.39 = 427,724.09 : x - Step 2: Convert to fraction form
1,137,689.90/1,706,789.39 = 427,724.09/x - Step 3: Cross multiply
1,137,689.90x = 1,706,789.39 × 427,724.09 - Step 4: Simplify right side
1,137,689.90x = 730,034,927,986.84 - Step 5: Solve for x
x = 730,034,927,986.84/1,137,689.90 - Step 6: Final answer
x = 641,681.82
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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.