Finding the Fourth Proportional to 742,465.47, 1,024,617.69 and 420,175.53
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Solution
The fourth proportional to 742,465.47, 1,024,617.69 and 420,175.53 is: 579,850.91
Step by Step Solution
- Step 1: Write the proportion equation
742,465.47 : 1,024,617.69 = 420,175.53 : x - Step 2: Convert to fraction form
742,465.47/1,024,617.69 = 420,175.53/x - Step 3: Cross multiply
742,465.47x = 1,024,617.69 × 420,175.53 - Step 4: Simplify right side
742,465.47x = 430,519,280,943.13 - Step 5: Solve for x
x = 430,519,280,943.13/742,465.47 - Step 6: Final answer
x = 579,850.91
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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.