Finding the Fourth Proportional to 6,908,830.40, 10,360,135.20 and 3,120,363.20
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Solution
The fourth proportional to 6,908,830.40, 10,360,135.20 and 3,120,363.20 is: 4,679,139.99
Step by Step Solution
- Step 1: Write the proportion equation
6,908,830.40 : 10,360,135.20 = 3,120,363.20 : x - Step 2: Convert to fraction form
6,908,830.40/10,360,135.20 = 3,120,363.20/x - Step 3: Cross multiply
6,908,830.40x = 10,360,135.20 × 3,120,363.20 - Step 4: Simplify right side
6,908,830.40x = 32,327,384,625,104.64 - Step 5: Solve for x
x = 32,327,384,625,104.64/6,908,830.40 - Step 6: Final answer
x = 4,679,139.99
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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.