Finding the Fourth Proportional to 9,317,156.63, 12,857,339.99 and 5,187,081.65
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Solution
The fourth proportional to 9,317,156.63, 12,857,339.99 and 5,187,081.65 is: 7,157,985.53
Step by Step Solution
- Step 1: Write the proportion equation
9,317,156.63 : 12,857,339.99 = 5,187,081.65 : x - Step 2: Convert to fraction form
9,317,156.63/12,857,339.99 = 5,187,081.65/x - Step 3: Cross multiply
9,317,156.63x = 12,857,339.99 × 5,187,081.65 - Step 4: Simplify right side
9,317,156.63x = 66,692,072,278,621.18 - Step 5: Solve for x
x = 66,692,072,278,621.18/9,317,156.63 - Step 6: Final answer
x = 7,157,985.53
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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.