Finding the Fourth Proportional to 4,920,809.19, 7,381,213.80 and 4,402,654.20
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Solution
The fourth proportional to 4,920,809.19, 7,381,213.80 and 4,402,654.20 is: 6,603,981.31
Step by Step Solution
- Step 1: Write the proportion equation
4,920,809.19 : 7,381,213.80 = 4,402,654.20 : x - Step 2: Convert to fraction form
4,920,809.19/7,381,213.80 = 4,402,654.20/x - Step 3: Cross multiply
4,920,809.19x = 7,381,213.80 × 4,402,654.20 - Step 4: Simplify right side
4,920,809.19x = 32,496,931,937,667.96 - Step 5: Solve for x
x = 32,496,931,937,667.96/4,920,809.19 - Step 6: Final answer
x = 6,603,981.31
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1.5x scale
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.