Finding the Fourth Proportional to 1,153,090.70, 1,591,268.25 and 643,811.30
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Solution
The fourth proportional to 1,153,090.70, 1,591,268.25 and 643,811.30 is: 888,461.32
Step by Step Solution
- Step 1: Write the proportion equation
1,153,090.70 : 1,591,268.25 = 643,811.30 : x - Step 2: Convert to fraction form
1,153,090.70/1,591,268.25 = 643,811.30/x - Step 3: Cross multiply
1,153,090.70x = 1,591,268.25 × 643,811.30 - Step 4: Simplify right side
1,153,090.70x = 1,024,476,480,681.23 - Step 5: Solve for x
x = 1,024,476,480,681.23/1,153,090.70 - Step 6: Final answer
x = 888,461.32
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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.