Finding the Fourth Proportional to 762,021.70, 1,065,430.70 and 762,021.70
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Solution
The fourth proportional to 762,021.70, 1,065,430.70 and 762,021.70 is: 1,065,430.70
Step by Step Solution
- Step 1: Write the proportion equation
762,021.70 : 1,065,430.70 = 762,021.70 : x - Step 2: Convert to fraction form
762,021.70/1,065,430.70 = 762,021.70/x - Step 3: Cross multiply
762,021.70x = 1,065,430.70 × 762,021.70 - Step 4: Simplify right side
762,021.70x = 811,881,313,246.19 - Step 5: Solve for x
x = 811,881,313,246.19/762,021.70 - Step 6: Final answer
x = 1,065,430.70
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1.5x scale
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.