Finding the Fourth Proportional to 531,574,583.70, 742,390,431.90 and 531,574,583.70
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Solution
The fourth proportional to 531,574,583.70, 742,390,431.90 and 531,574,583.70 is: 742,390,431.90
Step by Step Solution
- Step 1: Write the proportion equation
531,574,583.70 : 742,390,431.90 = 531,574,583.70 : x - Step 2: Convert to fraction form
531,574,583.70/742,390,431.90 = 531,574,583.70/x - Step 3: Cross multiply
531,574,583.70x = 742,390,431.90 × 531,574,583.70 - Step 4: Simplify right side
531,574,583.70x = 394,635,884,780,105,664 - Step 5: Solve for x
x = 394,635,884,780,105,664/531,574,583.70 - Step 6: Final answer
x = 742,390,431.90
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.