Finding the Fourth Proportional to 514,430.64, 709,951.68 and 310,531.23
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Solution
The fourth proportional to 514,430.64, 709,951.68 and 310,531.23 is: 428,555.67
Step by Step Solution
- Step 1: Write the proportion equation
514,430.64 : 709,951.68 = 310,531.23 : x - Step 2: Convert to fraction form
514,430.64/709,951.68 = 310,531.23/x - Step 3: Cross multiply
514,430.64x = 709,951.68 × 310,531.23 - Step 4: Simplify right side
514,430.64x = 220,462,168,430.97 - Step 5: Solve for x
x = 220,462,168,430.97/514,430.64 - Step 6: Final answer
x = 428,555.67
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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.