Finding the Fourth Proportional to 936,132.48, 1,290,691.44 and 781,305.12
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Solution
The fourth proportional to 936,132.48, 1,290,691.44 and 781,305.12 is: 1,077,223.42
Step by Step Solution
- Step 1: Write the proportion equation
936,132.48 : 1,290,691.44 = 781,305.12 : x - Step 2: Convert to fraction form
936,132.48/1,290,691.44 = 781,305.12/x - Step 3: Cross multiply
936,132.48x = 1,290,691.44 × 781,305.12 - Step 4: Simplify right side
936,132.48x = 1,008,423,830,412.17 - Step 5: Solve for x
x = 1,008,423,830,412.17/936,132.48 - Step 6: Final answer
x = 1,077,223.42
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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.