Finding the Fourth Proportional to 921,828.78, 1,272,404.88 and 534,742.02
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Solution
The fourth proportional to 921,828.78, 1,272,404.88 and 534,742.02 is: 738,107.09
Step by Step Solution
- Step 1: Write the proportion equation
921,828.78 : 1,272,404.88 = 534,742.02 : x - Step 2: Convert to fraction form
921,828.78/1,272,404.88 = 534,742.02/x - Step 3: Cross multiply
921,828.78x = 1,272,404.88 × 534,742.02 - Step 4: Simplify right side
921,828.78x = 680,408,355,789.06 - Step 5: Solve for x
x = 680,408,355,789.06/921,828.78 - Step 6: Final answer
x = 738,107.09
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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.