Finding the Fourth Proportional to 1,069,316.64, 1,603,977.12 and 438,117.12
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Solution
The fourth proportional to 1,069,316.64, 1,603,977.12 and 438,117.12 is: 657,176.56
Step by Step Solution
- Step 1: Write the proportion equation
1,069,316.64 : 1,603,977.12 = 438,117.12 : x - Step 2: Convert to fraction form
1,069,316.64/1,603,977.12 = 438,117.12/x - Step 3: Cross multiply
1,069,316.64x = 1,603,977.12 × 438,117.12 - Step 4: Simplify right side
1,069,316.64x = 702,729,836,360.29 - Step 5: Solve for x
x = 702,729,836,360.29/1,069,316.64 - Step 6: Final answer
x = 657,176.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.