Finding the Fourth Proportional to 438,073.86, 653,243.91 and 422,462.53
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Solution
The fourth proportional to 438,073.86, 653,243.91 and 422,462.53 is: 629,964.70
Step by Step Solution
- Step 1: Write the proportion equation
438,073.86 : 653,243.91 = 422,462.53 : x - Step 2: Convert to fraction form
438,073.86/653,243.91 = 422,462.53/x - Step 3: Cross multiply
438,073.86x = 653,243.91 × 422,462.53 - Step 4: Simplify right side
438,073.86x = 275,971,069,547.16 - Step 5: Solve for x
x = 275,971,069,547.16/438,073.86 - Step 6: Final answer
x = 629,964.70
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.