Finding the Fourth Proportional to 528,621.09, 729,497.81 and 286,903.65
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Solution
The fourth proportional to 528,621.09, 729,497.81 and 286,903.65 is: 395,927.43
Step by Step Solution
- Step 1: Write the proportion equation
528,621.09 : 729,497.81 = 286,903.65 : x - Step 2: Convert to fraction form
528,621.09/729,497.81 = 286,903.65/x - Step 3: Cross multiply
528,621.09x = 729,497.81 × 286,903.65 - Step 4: Simplify right side
528,621.09x = 209,295,587,808.88 - Step 5: Solve for x
x = 209,295,587,808.88/528,621.09 - Step 6: Final answer
x = 395,927.43
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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.