Finding the Fourth Proportional to 1,221,647.68, 1,686,023.36 and 705,400.26
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Solution
The fourth proportional to 1,221,647.68, 1,686,023.36 and 705,400.26 is: 973,538.72
Step by Step Solution
- Step 1: Write the proportion equation
1,221,647.68 : 1,686,023.36 = 705,400.26 : x - Step 2: Convert to fraction form
1,221,647.68/1,686,023.36 = 705,400.26/x - Step 3: Cross multiply
1,221,647.68x = 1,686,023.36 × 705,400.26 - Step 4: Simplify right side
1,221,647.68x = 1,189,321,316,510.07 - Step 5: Solve for x
x = 1,189,321,316,510.07/1,221,647.68 - Step 6: Final answer
x = 973,538.72
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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.