Finding the Fourth Proportional to 640,547.70, 961,120.44 and 285,524.70
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Solution
The fourth proportional to 640,547.70, 961,120.44 and 285,524.70 is: 428,420.28
Step by Step Solution
- Step 1: Write the proportion equation
640,547.70 : 961,120.44 = 285,524.70 : x - Step 2: Convert to fraction form
640,547.70/961,120.44 = 285,524.70/x - Step 3: Cross multiply
640,547.70x = 961,120.44 × 285,524.70 - Step 4: Simplify right side
640,547.70x = 274,423,625,294.87 - Step 5: Solve for x
x = 274,423,625,294.87/640,547.70 - Step 6: Final answer
x = 428,420.28
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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.