Finding the Fourth Proportional to 687,854.75, 949,239.56 and 386,048.75
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Solution
The fourth proportional to 687,854.75, 949,239.56 and 386,048.75 is: 532,747.28
Step by Step Solution
- Step 1: Write the proportion equation
687,854.75 : 949,239.56 = 386,048.75 : x - Step 2: Convert to fraction form
687,854.75/949,239.56 = 386,048.75/x - Step 3: Cross multiply
687,854.75x = 949,239.56 × 386,048.75 - Step 4: Simplify right side
687,854.75x = 366,452,745,588.55 - Step 5: Solve for x
x = 366,452,745,588.55/687,854.75 - Step 6: Final answer
x = 532,747.28
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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.