Finding the Fourth Proportional to 771,545.32, 1,064,486.49 and 499,821.49
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Solution
The fourth proportional to 771,545.32, 1,064,486.49 and 499,821.49 is: 689,594.26
Step by Step Solution
- Step 1: Write the proportion equation
771,545.32 : 1,064,486.49 = 499,821.49 : x - Step 2: Convert to fraction form
771,545.32/1,064,486.49 = 499,821.49/x - Step 3: Cross multiply
771,545.32x = 1,064,486.49 × 499,821.49 - Step 4: Simplify right side
771,545.32x = 532,053,223,516.67 - Step 5: Solve for x
x = 532,053,223,516.67/771,545.32 - Step 6: Final answer
x = 689,594.26
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1.5x scale
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.