Finding the Fourth Proportional to 877,569.13, 1,316,353.70 and 212,721.13
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Solution
The fourth proportional to 877,569.13, 1,316,353.70 and 212,721.13 is: 319,081.70
Step by Step Solution
- Step 1: Write the proportion equation
877,569.13 : 1,316,353.70 = 212,721.13 : x - Step 2: Convert to fraction form
877,569.13/1,316,353.70 = 212,721.13/x - Step 3: Cross multiply
877,569.13x = 1,316,353.70 × 212,721.13 - Step 4: Simplify right side
877,569.13x = 280,016,246,543.68 - Step 5: Solve for x
x = 280,016,246,543.68/877,569.13 - Step 6: Final answer
x = 319,081.70
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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.