Finding the Fourth Proportional to 9,121,440.30, 12,587,588.86 and 4,991,472.42
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Solution
The fourth proportional to 9,121,440.30, 12,587,588.86 and 4,991,472.42 is: 6,888,232.62
Step by Step Solution
- Step 1: Write the proportion equation
9,121,440.30 : 12,587,588.86 = 4,991,472.42 : x - Step 2: Convert to fraction form
9,121,440.30/12,587,588.86 = 4,991,472.42/x - Step 3: Cross multiply
9,121,440.30x = 12,587,588.86 × 4,991,472.42 - Step 4: Simplify right side
9,121,440.30x = 62,830,602,564,625.09 - Step 5: Solve for x
x = 62,830,602,564,625.09/9,121,440.30 - Step 6: Final answer
x = 6,888,232.62
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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.