Finding the Fourth Proportional to 2,815,605.19, 3,888,742.76 and 1,908,612.55
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Solution
The fourth proportional to 2,815,605.19, 3,888,742.76 and 1,908,612.55 is: 2,636,059.65
Step by Step Solution
- Step 1: Write the proportion equation
2,815,605.19 : 3,888,742.76 = 1,908,612.55 : x - Step 2: Convert to fraction form
2,815,605.19/3,888,742.76 = 1,908,612.55/x - Step 3: Cross multiply
2,815,605.19x = 3,888,742.76 × 1,908,612.55 - Step 4: Simplify right side
2,815,605.19x = 7,422,103,230,507.31 - Step 5: Solve for x
x = 7,422,103,230,507.31/2,815,605.19 - Step 6: Final answer
x = 2,636,059.65
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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.