Finding the Fourth Proportional to 8,420,952.95, 11,620,043.28 and 6,216,988.65
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Solution
The fourth proportional to 8,420,952.95, 11,620,043.28 and 6,216,988.65 is: 8,578,800.72
Step by Step Solution
- Step 1: Write the proportion equation
8,420,952.95 : 11,620,043.28 = 6,216,988.65 : x - Step 2: Convert to fraction form
8,420,952.95/11,620,043.28 = 6,216,988.65/x - Step 3: Cross multiply
8,420,952.95x = 11,620,043.28 × 6,216,988.65 - Step 4: Simplify right side
8,420,952.95x = 72,241,677,184,268.77 - Step 5: Solve for x
x = 72,241,677,184,268.77/8,420,952.95 - Step 6: Final answer
x = 8,578,800.72
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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.