Finding the Fourth Proportional to 2,129,809.20, 3,193,547.40 and 866,209.20
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Solution
The fourth proportional to 2,129,809.20, 3,193,547.40 and 866,209.20 is: 1,298,839.42
Step by Step Solution
- Step 1: Write the proportion equation
2,129,809.20 : 3,193,547.40 = 866,209.20 : x - Step 2: Convert to fraction form
2,129,809.20/3,193,547.40 = 866,209.20/x - Step 3: Cross multiply
2,129,809.20x = 3,193,547.40 × 866,209.20 - Step 4: Simplify right side
2,129,809.20x = 2,766,280,138,516.08 - Step 5: Solve for x
x = 2,766,280,138,516.08/2,129,809.20 - Step 6: Final answer
x = 1,298,839.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.