Finding the Fourth Proportional to 8,686,854.18, 11,977,981.65 and 5,542,888.59
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Solution
The fourth proportional to 8,686,854.18, 11,977,981.65 and 5,542,888.59 is: 7,642,883.88
Step by Step Solution
- Step 1: Write the proportion equation
8,686,854.18 : 11,977,981.65 = 5,542,888.59 : x - Step 2: Convert to fraction form
8,686,854.18/11,977,981.65 = 5,542,888.59/x - Step 3: Cross multiply
8,686,854.18x = 11,977,981.65 × 5,542,888.59 - Step 4: Simplify right side
8,686,854.18x = 66,392,617,819,014.38 - Step 5: Solve for x
x = 66,392,617,819,014.38/8,686,854.18 - Step 6: Final answer
x = 7,642,883.88
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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.