Finding the Fourth Proportional to 7,048,328.79, 9,708,500.21 and 4,979,753.55
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Solution
The fourth proportional to 7,048,328.79, 9,708,500.21 and 4,979,753.55 is: 6,859,205.90
Step by Step Solution
- Step 1: Write the proportion equation
7,048,328.79 : 9,708,500.21 = 4,979,753.55 : x - Step 2: Convert to fraction form
7,048,328.79/9,708,500.21 = 4,979,753.55/x - Step 3: Cross multiply
7,048,328.79x = 9,708,500.21 × 4,979,753.55 - Step 4: Simplify right side
7,048,328.79x = 48,345,938,423,698.23 - Step 5: Solve for x
x = 48,345,938,423,698.23/7,048,328.79 - Step 6: Final answer
x = 6,859,205.90
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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.