Finding the Fourth Proportional to 1,153,155.20, 1,591,452.56 and 643,955.99
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Solution
The fourth proportional to 1,153,155.20, 1,591,452.56 and 643,955.99 is: 888,714.21
Step by Step Solution
- Step 1: Write the proportion equation
1,153,155.20 : 1,591,452.56 = 643,955.99 : x - Step 2: Convert to fraction form
1,153,155.20/1,591,452.56 = 643,955.99/x - Step 3: Cross multiply
1,153,155.20x = 1,591,452.56 × 643,955.99 - Step 4: Simplify right side
1,153,155.20x = 1,024,825,402,465.46 - Step 5: Solve for x
x = 1,024,825,402,465.46/1,153,155.20 - Step 6: Final answer
x = 888,714.21
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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.