Finding the Fourth Proportional to 2,239,621.40, 3,359,432.10 and 1,389,315.80
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Solution
The fourth proportional to 2,239,621.40, 3,359,432.10 and 1,389,315.80 is: 2,083,973.70
Step by Step Solution
- Step 1: Write the proportion equation
2,239,621.40 : 3,359,432.10 = 1,389,315.80 : x - Step 2: Convert to fraction form
2,239,621.40/3,359,432.10 = 1,389,315.80/x - Step 3: Cross multiply
2,239,621.40x = 3,359,432.10 × 1,389,315.80 - Step 4: Simplify right side
2,239,621.40x = 4,667,312,095,557.18 - Step 5: Solve for x
x = 4,667,312,095,557.18/2,239,621.40 - Step 6: Final answer
x = 2,083,973.70
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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.