Finding the Fourth Proportional to 1,138,289.80, 1,707,531.90 and 390,335.80
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Solution
The fourth proportional to 1,138,289.80, 1,707,531.90 and 390,335.80 is: 585,537.03
Step by Step Solution
- Step 1: Write the proportion equation
1,138,289.80 : 1,707,531.90 = 390,335.80 : x - Step 2: Convert to fraction form
1,138,289.80/1,707,531.90 = 390,335.80/x - Step 3: Cross multiply
1,138,289.80x = 1,707,531.90 × 390,335.80 - Step 4: Simplify right side
1,138,289.80x = 666,510,830,212.02 - Step 5: Solve for x
x = 666,510,830,212.02/1,138,289.80 - Step 6: Final answer
x = 585,537.03
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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.