Finding the Fourth Proportional to 1,205,373.21, 1,663,305.02 and 715,258.13
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Solution
The fourth proportional to 1,205,373.21, 1,663,305.02 and 715,258.13 is: 986,990.94
Step by Step Solution
- Step 1: Write the proportion equation
1,205,373.21 : 1,663,305.02 = 715,258.13 : x - Step 2: Convert to fraction form
1,205,373.21/1,663,305.02 = 715,258.13/x - Step 3: Cross multiply
1,205,373.21x = 1,663,305.02 × 715,258.13 - Step 4: Simplify right side
1,205,373.21x = 1,189,692,444,381.51 - Step 5: Solve for x
x = 1,189,692,444,381.51/1,205,373.21 - Step 6: Final answer
x = 986,990.94
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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.