Finding the Fourth Proportional to 787,695.12, 1,086,971.40 and 465,328.08
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Solution
The fourth proportional to 787,695.12, 1,086,971.40 and 465,328.08 is: 642,124.47
Step by Step Solution
- Step 1: Write the proportion equation
787,695.12 : 1,086,971.40 = 465,328.08 : x - Step 2: Convert to fraction form
787,695.12/1,086,971.40 = 465,328.08/x - Step 3: Cross multiply
787,695.12x = 1,086,971.40 × 465,328.08 - Step 4: Simplify right side
787,695.12x = 505,798,314,576.91 - Step 5: Solve for x
x = 505,798,314,576.91/787,695.12 - Step 6: Final answer
x = 642,124.47
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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.