Finding the Fourth Proportional to 5,390,778.63, 7,439,378.09 and 2,943,486.67
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Solution
The fourth proportional to 5,390,778.63, 7,439,378.09 and 2,943,486.67 is: 4,062,068.16
Step by Step Solution
- Step 1: Write the proportion equation
5,390,778.63 : 7,439,378.09 = 2,943,486.67 : x - Step 2: Convert to fraction form
5,390,778.63/7,439,378.09 = 2,943,486.67/x - Step 3: Cross multiply
5,390,778.63x = 7,439,378.09 × 2,943,486.67 - Step 4: Simplify right side
5,390,778.63x = 21,897,710,241,005.06 - Step 5: Solve for x
x = 21,897,710,241,005.06/5,390,778.63 - Step 6: Final answer
x = 4,062,068.16
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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.