Finding the Fourth Proportional to 528,602.25, 729,465.04 and 286,884.99
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Solution
The fourth proportional to 528,602.25, 729,465.04 and 286,884.99 is: 395,897.99
Step by Step Solution
- Step 1: Write the proportion equation
528,602.25 : 729,465.04 = 286,884.99 : x - Step 2: Convert to fraction form
528,602.25/729,465.04 = 286,884.99/x - Step 3: Cross multiply
528,602.25x = 729,465.04 × 286,884.99 - Step 4: Simplify right side
528,602.25x = 209,272,571,064.36 - Step 5: Solve for x
x = 209,272,571,064.36/528,602.25 - Step 6: Final answer
x = 395,897.99
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1.5x scale
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.