Finding the Fourth Proportional to 7,878,566.12, 10,872,421.28 and 4,256,894.12
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Solution
The fourth proportional to 7,878,566.12, 10,872,421.28 and 4,256,894.12 is: 5,874,513.90
Step by Step Solution
- Step 1: Write the proportion equation
7,878,566.12 : 10,872,421.28 = 4,256,894.12 : x - Step 2: Convert to fraction form
7,878,566.12/10,872,421.28 = 4,256,894.12/x - Step 3: Cross multiply
7,878,566.12x = 10,872,421.28 × 4,256,894.12 - Step 4: Simplify right side
7,878,566.12x = 46,282,746,216,994.88 - Step 5: Solve for x
x = 46,282,746,216,994.88/7,878,566.12 - Step 6: Final answer
x = 5,874,513.90
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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.