Finding the Fourth Proportional to 717,237.81, 989,794.74 and 394,959.47
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Solution
The fourth proportional to 717,237.81, 989,794.74 and 394,959.47 is: 545,047.68
Step by Step Solution
- Step 1: Write the proportion equation
717,237.81 : 989,794.74 = 394,959.47 : x - Step 2: Convert to fraction form
717,237.81/989,794.74 = 394,959.47/x - Step 3: Cross multiply
717,237.81x = 989,794.74 × 394,959.47 - Step 4: Simplify right side
717,237.81x = 390,928,800,970.21 - Step 5: Solve for x
x = 390,928,800,970.21/717,237.81 - Step 6: Final answer
x = 545,047.68
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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.