Finding the Fourth Proportional to 1,121,531.13, 1,547,739.50 and 612,237.15
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Solution
The fourth proportional to 1,121,531.13, 1,547,739.50 and 612,237.15 is: 844,901.75
Step by Step Solution
- Step 1: Write the proportion equation
1,121,531.13 : 1,547,739.50 = 612,237.15 : x - Step 2: Convert to fraction form
1,121,531.13/1,547,739.50 = 612,237.15/x - Step 3: Cross multiply
1,121,531.13x = 1,547,739.50 × 612,237.15 - Step 4: Simplify right side
1,121,531.13x = 947,583,617,361.24 - Step 5: Solve for x
x = 947,583,617,361.24/1,121,531.13 - Step 6: Final answer
x = 844,901.75
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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.