Finding the Fourth Proportional to 1,531,455.46, 2,113,369.91 and 843,120.45
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Solution
The fourth proportional to 1,531,455.46, 2,113,369.91 and 843,120.45 is: 1,163,484.95
Step by Step Solution
- Step 1: Write the proportion equation
1,531,455.46 : 2,113,369.91 = 843,120.45 : x - Step 2: Convert to fraction form
1,531,455.46/2,113,369.91 = 843,120.45/x - Step 3: Cross multiply
1,531,455.46x = 2,113,369.91 × 843,120.45 - Step 4: Simplify right side
1,531,455.46x = 1,781,825,380,166.63 - Step 5: Solve for x
x = 1,781,825,380,166.63/1,531,455.46 - Step 6: Final answer
x = 1,163,484.95
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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.