Finding the Fourth Proportional to 4,260,281.40, 6,390,478.58 and 1,420,394.49
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Solution
The fourth proportional to 4,260,281.40, 6,390,478.58 and 1,420,394.49 is: 2,130,610.56
Step by Step Solution
- Step 1: Write the proportion equation
4,260,281.40 : 6,390,478.58 = 1,420,394.49 : x - Step 2: Convert to fraction form
4,260,281.40/6,390,478.58 = 1,420,394.49/x - Step 3: Cross multiply
4,260,281.40x = 6,390,478.58 × 1,420,394.49 - Step 4: Simplify right side
4,260,281.40x = 9,077,000,556,393.05 - Step 5: Solve for x
x = 9,077,000,556,393.05/4,260,281.40 - Step 6: Final answer
x = 2,130,610.56
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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.