Finding the Fourth Proportional to 509,395.86, 702,937.68 and 305,344.66
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Solution
The fourth proportional to 509,395.86, 702,937.68 and 305,344.66 is: 421,358.48
Step by Step Solution
- Step 1: Write the proportion equation
509,395.86 : 702,937.68 = 305,344.66 : x - Step 2: Convert to fraction form
509,395.86/702,937.68 = 305,344.66/x - Step 3: Cross multiply
509,395.86x = 702,937.68 × 305,344.66 - Step 4: Simplify right side
509,395.86x = 214,638,266,900.79 - Step 5: Solve for x
x = 214,638,266,900.79/509,395.86 - Step 6: Final answer
x = 421,358.48
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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.