Finding the Fourth Proportional to 1,428,398.15, 1,971,186.62 and 775,023.95
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Solution
The fourth proportional to 1,428,398.15, 1,971,186.62 and 775,023.95 is: 1,069,531.52
Step by Step Solution
- Step 1: Write the proportion equation
1,428,398.15 : 1,971,186.62 = 775,023.95 : x - Step 2: Convert to fraction form
1,428,398.15/1,971,186.62 = 775,023.95/x - Step 3: Cross multiply
1,428,398.15x = 1,971,186.62 × 775,023.95 - Step 4: Simplify right side
1,428,398.15x = 1,527,716,841,472.40 - Step 5: Solve for x
x = 1,527,716,841,472.40/1,428,398.15 - Step 6: Final answer
x = 1,069,531.52
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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.