Finding the Fourth Proportional to 555,638.23, 766,779.11 and 313,920.71
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Solution
The fourth proportional to 555,638.23, 766,779.11 and 313,920.71 is: 433,209.65
Step by Step Solution
- Step 1: Write the proportion equation
555,638.23 : 766,779.11 = 313,920.71 : x - Step 2: Convert to fraction form
555,638.23/766,779.11 = 313,920.71/x - Step 3: Cross multiply
555,638.23x = 766,779.11 × 313,920.71 - Step 4: Simplify right side
555,638.23x = 240,707,845,586.63 - Step 5: Solve for x
x = 240,707,845,586.63/555,638.23 - Step 6: Final answer
x = 433,209.65
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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.