Finding the Fourth Proportional to 1,138,207.68, 1,570,726.08 and 628,905.60
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Solution
The fourth proportional to 1,138,207.68, 1,570,726.08 and 628,905.60 is: 867,889.44
Step by Step Solution
- Step 1: Write the proportion equation
1,138,207.68 : 1,570,726.08 = 628,905.60 : x - Step 2: Convert to fraction form
1,138,207.68/1,570,726.08 = 628,905.60/x - Step 3: Cross multiply
1,138,207.68x = 1,570,726.08 × 628,905.60 - Step 4: Simplify right side
1,138,207.68x = 987,838,427,778.05 - Step 5: Solve for x
x = 987,838,427,778.05/1,138,207.68 - Step 6: Final answer
x = 867,889.44
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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.