Finding the Fourth Proportional to 10,720,698.49, 14,787,081.93 and 7,048,441.18
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Solution
The fourth proportional to 10,720,698.49, 14,787,081.93 and 7,048,441.18 is: 9,721,929.71
Step by Step Solution
- Step 1: Write the proportion equation
10,720,698.49 : 14,787,081.93 = 7,048,441.18 : x - Step 2: Convert to fraction form
10,720,698.49/14,787,081.93 = 7,048,441.18/x - Step 3: Cross multiply
10,720,698.49x = 14,787,081.93 × 7,048,441.18 - Step 4: Simplify right side
10,720,698.49x = 104,225,877,207,445.88 - Step 5: Solve for x
x = 104,225,877,207,445.88/10,720,698.49 - Step 6: Final answer
x = 9,721,929.71
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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.