Finding the Fourth Proportional to 1,125,551.50, 1,553,409.39 and 642,005.98
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Solution
The fourth proportional to 1,125,551.50, 1,553,409.39 and 642,005.98 is: 886,052.85
Step by Step Solution
- Step 1: Write the proportion equation
1,125,551.50 : 1,553,409.39 = 642,005.98 : x - Step 2: Convert to fraction form
1,125,551.50/1,553,409.39 = 642,005.98/x - Step 3: Cross multiply
1,125,551.50x = 1,553,409.39 × 642,005.98 - Step 4: Simplify right side
1,125,551.50x = 997,298,117,768.15 - Step 5: Solve for x
x = 997,298,117,768.15/1,125,551.50 - Step 6: Final answer
x = 886,052.85
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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.