Finding the Fourth Proportional to 742,170.75, 1,024,197.62 and 402,639
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Solution
The fourth proportional to 742,170.75, 1,024,197.62 and 402,639 is: 555,642.89
Step by Step Solution
- Step 1: Write the proportion equation
742,170.75 : 1,024,197.62 = 402,639 : x - Step 2: Convert to fraction form
742,170.75/1,024,197.62 = 402,639/x - Step 3: Cross multiply
742,170.75x = 1,024,197.62 × 402,639 - Step 4: Simplify right side
742,170.75x = 412,381,903,505.99 - Step 5: Solve for x
x = 412,381,903,505.99/742,170.75 - Step 6: Final answer
x = 555,642.89
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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.