Finding the Fourth Proportional to 528,646.58, 729,512.73 and 286,923.96
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Solution
The fourth proportional to 528,646.58, 729,512.73 and 286,923.96 is: 395,944.45
Step by Step Solution
- Step 1: Write the proportion equation
528,646.58 : 729,512.73 = 286,923.96 : x - Step 2: Convert to fraction form
528,646.58/729,512.73 = 286,923.96/x - Step 3: Cross multiply
528,646.58x = 729,512.73 × 286,923.96 - Step 4: Simplify right side
528,646.58x = 209,314,680,336.13 - Step 5: Solve for x
x = 209,314,680,336.13/528,646.58 - Step 6: Final answer
x = 395,944.45
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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.