Finding the Fourth Proportional to 787,781.49, 1,087,077.07 and 465,430.45
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Solution
The fourth proportional to 787,781.49, 1,087,077.07 and 465,430.45 is: 642,257.75
Step by Step Solution
- Step 1: Write the proportion equation
787,781.49 : 1,087,077.07 = 465,430.45 : x - Step 2: Convert to fraction form
787,781.49/1,087,077.07 = 465,430.45/x - Step 3: Cross multiply
787,781.49x = 1,087,077.07 × 465,430.45 - Step 4: Simplify right side
787,781.49x = 505,958,762,112.24 - Step 5: Solve for x
x = 505,958,762,112.24/787,781.49 - Step 6: Final answer
x = 642,257.75
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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.