Finding the Fourth Proportional to 1,401,835.20, 2,102,722.44 and 390,930.18
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Solution
The fourth proportional to 1,401,835.20, 2,102,722.44 and 390,930.18 is: 586,386.80
Step by Step Solution
- Step 1: Write the proportion equation
1,401,835.20 : 2,102,722.44 = 390,930.18 : x - Step 2: Convert to fraction form
1,401,835.20/2,102,722.44 = 390,930.18/x - Step 3: Cross multiply
1,401,835.20x = 2,102,722.44 × 390,930.18 - Step 4: Simplify right side
1,401,835.20x = 822,017,661,959.24 - Step 5: Solve for x
x = 822,017,661,959.24/1,401,835.20 - Step 6: Final answer
x = 586,386.80
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1.5x scale
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.