Finding the Fourth Proportional to 916,132.19, 1,264,263.91 and 508,234.05
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Solution
The fourth proportional to 916,132.19, 1,264,263.91 and 508,234.05 is: 701,363.81
Step by Step Solution
- Step 1: Write the proportion equation
916,132.19 : 1,264,263.91 = 508,234.05 : x - Step 2: Convert to fraction form
916,132.19/1,264,263.91 = 508,234.05/x - Step 3: Cross multiply
916,132.19x = 1,264,263.91 × 508,234.05 - Step 4: Simplify right side
916,132.19x = 642,541,965,977.55 - Step 5: Solve for x
x = 642,541,965,977.55/916,132.19 - Step 6: Final answer
x = 701,363.81
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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.