Finding the Fourth Proportional to 1,389,610.26, 1,916,139.35 and 905,277.24
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Solution
The fourth proportional to 1,389,610.26, 1,916,139.35 and 905,277.24 is: 1,248,290.54
Step by Step Solution
- Step 1: Write the proportion equation
1,389,610.26 : 1,916,139.35 = 905,277.24 : x - Step 2: Convert to fraction form
1,389,610.26/1,916,139.35 = 905,277.24/x - Step 3: Cross multiply
1,389,610.26x = 1,916,139.35 × 905,277.24 - Step 4: Simplify right side
1,389,610.26x = 1,734,637,344,486.59 - Step 5: Solve for x
x = 1,734,637,344,486.59/1,389,610.26 - Step 6: Final answer
x = 1,248,290.54
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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.