Finding the Fourth Proportional to 1,398,408.08, 1,929,860.72 and 786,589.36
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Solution
The fourth proportional to 1,398,408.08, 1,929,860.72 and 786,589.36 is: 1,085,525.70
Step by Step Solution
- Step 1: Write the proportion equation
1,398,408.08 : 1,929,860.72 = 786,589.36 : x - Step 2: Convert to fraction form
1,398,408.08/1,929,860.72 = 786,589.36/x - Step 3: Cross multiply
1,398,408.08x = 1,929,860.72 × 786,589.36 - Step 4: Simplify right side
1,398,408.08x = 1,518,007,908,633.94 - Step 5: Solve for x
x = 1,518,007,908,633.94/1,398,408.08 - Step 6: Final answer
x = 1,085,525.70
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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.