Finding the Fourth Proportional to 1,153,156.70, 1,591,454.64 and 643,957.49
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Solution
The fourth proportional to 1,153,156.70, 1,591,454.64 and 643,957.49 is: 888,716.28
Step by Step Solution
- Step 1: Write the proportion equation
1,153,156.70 : 1,591,454.64 = 643,957.49 : x - Step 2: Convert to fraction form
1,153,156.70/1,591,454.64 = 643,957.49/x - Step 3: Cross multiply
1,153,156.70x = 1,591,454.64 × 643,957.49 - Step 4: Simplify right side
1,153,156.70x = 1,024,829,127,465.98 - Step 5: Solve for x
x = 1,024,829,127,465.98/1,153,156.70 - Step 6: Final answer
x = 888,716.28
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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.