Finding the Fourth Proportional to 1,013,989.97, 1,399,306.18 and 561,280.97
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Solution
The fourth proportional to 1,013,989.97, 1,399,306.18 and 561,280.97 is: 774,567.75
Step by Step Solution
- Step 1: Write the proportion equation
1,013,989.97 : 1,399,306.18 = 561,280.97 : x - Step 2: Convert to fraction form
1,013,989.97/1,399,306.18 = 561,280.97/x - Step 3: Cross multiply
1,013,989.97x = 1,399,306.18 × 561,280.97 - Step 4: Simplify right side
1,013,989.97x = 785,403,932,132.46 - Step 5: Solve for x
x = 785,403,932,132.46/1,013,989.97 - Step 6: Final answer
x = 774,567.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.