Finding the Fourth Proportional to 1,121,603.42, 1,547,804.84 and 612,305.79
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Solution
The fourth proportional to 1,121,603.42, 1,547,804.84 and 612,305.79 is: 844,977.69
Step by Step Solution
- Step 1: Write the proportion equation
1,121,603.42 : 1,547,804.84 = 612,305.79 : x - Step 2: Convert to fraction form
1,121,603.42/1,547,804.84 = 612,305.79/x - Step 3: Cross multiply
1,121,603.42x = 1,547,804.84 × 612,305.79 - Step 4: Simplify right side
1,121,603.42x = 947,729,865,322.02 - Step 5: Solve for x
x = 947,729,865,322.02/1,121,603.42 - Step 6: Final answer
x = 844,977.69
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1.5x scale
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.