Finding the Fourth Proportional to 565,910.12, 780,970.74 and 311,267.99
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Solution
The fourth proportional to 565,910.12, 780,970.74 and 311,267.99 is: 429,557.95
Step by Step Solution
- Step 1: Write the proportion equation
565,910.12 : 780,970.74 = 311,267.99 : x - Step 2: Convert to fraction form
565,910.12/780,970.74 = 311,267.99/x - Step 3: Cross multiply
565,910.12x = 780,970.74 × 311,267.99 - Step 4: Simplify right side
565,910.12x = 243,091,192,488.61 - Step 5: Solve for x
x = 243,091,192,488.61/565,910.12 - Step 6: Final answer
x = 429,557.95
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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.