Finding the Fourth Proportional to 553,560.22, 763,909.68 and 311,920.66
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Solution
The fourth proportional to 553,560.22, 763,909.68 and 311,920.66 is: 430,448.58
Step by Step Solution
- Step 1: Write the proportion equation
553,560.22 : 763,909.68 = 311,920.66 : x - Step 2: Convert to fraction form
553,560.22/763,909.68 = 311,920.66/x - Step 3: Cross multiply
553,560.22x = 763,909.68 × 311,920.66 - Step 4: Simplify right side
553,560.22x = 238,279,211,565.99 - Step 5: Solve for x
x = 238,279,211,565.99/553,560.22 - Step 6: Final answer
x = 430,448.58
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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.