Finding the Fourth Proportional to 2,117,281.70, 2,921,860.80 and 1,246,149.08
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Solution
The fourth proportional to 2,117,281.70, 2,921,860.80 and 1,246,149.08 is: 1,719,692.82
Step by Step Solution
- Step 1: Write the proportion equation
2,117,281.70 : 2,921,860.80 = 1,246,149.08 : x - Step 2: Convert to fraction form
2,117,281.70/2,921,860.80 = 1,246,149.08/x - Step 3: Cross multiply
2,117,281.70x = 2,921,860.80 × 1,246,149.08 - Step 4: Simplify right side
2,117,281.70x = 3,641,074,133,198.76 - Step 5: Solve for x
x = 3,641,074,133,198.76/2,117,281.70 - Step 6: Final answer
x = 1,719,692.82
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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.