Finding the Fourth Proportional to 8,979,895.68, 12,392,267.28 and 5,112,416.76
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Solution
The fourth proportional to 8,979,895.68, 12,392,267.28 and 5,112,416.76 is: 7,055,141.53
Step by Step Solution
- Step 1: Write the proportion equation
8,979,895.68 : 12,392,267.28 = 5,112,416.76 : x - Step 2: Convert to fraction form
8,979,895.68/12,392,267.28 = 5,112,416.76/x - Step 3: Cross multiply
8,979,895.68x = 12,392,267.28 × 5,112,416.76 - Step 4: Simplify right side
8,979,895.68x = 63,354,434,936,671.61 - Step 5: Solve for x
x = 63,354,434,936,671.61/8,979,895.68 - Step 6: Final answer
x = 7,055,141.53
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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.