Finding the Fourth Proportional to 831,726.84, 1,147,735.29 and 469,129.08
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Solution
The fourth proportional to 831,726.84, 1,147,735.29 and 469,129.08 is: 647,371.20
Step by Step Solution
- Step 1: Write the proportion equation
831,726.84 : 1,147,735.29 = 469,129.08 : x - Step 2: Convert to fraction form
831,726.84/1,147,735.29 = 469,129.08/x - Step 3: Cross multiply
831,726.84x = 1,147,735.29 × 469,129.08 - Step 4: Simplify right side
831,726.84x = 538,436,000,681.23 - Step 5: Solve for x
x = 538,436,000,681.23/831,726.84 - Step 6: Final answer
x = 647,371.20
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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.