Finding the Fourth Proportional to 812,317.12, 1,217,752.35 and 385,589.68
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Solution
The fourth proportional to 812,317.12, 1,217,752.35 and 385,589.68 is: 578,041.17
Step by Step Solution
- Step 1: Write the proportion equation
812,317.12 : 1,217,752.35 = 385,589.68 : x - Step 2: Convert to fraction form
812,317.12/1,217,752.35 = 385,589.68/x - Step 3: Cross multiply
812,317.12x = 1,217,752.35 × 385,589.68 - Step 4: Simplify right side
812,317.12x = 469,552,738,955.75 - Step 5: Solve for x
x = 469,552,738,955.75/812,317.12 - Step 6: Final answer
x = 578,041.17
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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.