Finding the Fourth Proportional to 717,249.26, 989,802.40 and 390,557.19
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Solution
The fourth proportional to 717,249.26, 989,802.40 and 390,557.19 is: 538,968.07
Step by Step Solution
- Step 1: Write the proportion equation
717,249.26 : 989,802.40 = 390,557.19 : x - Step 2: Convert to fraction form
717,249.26/989,802.40 = 390,557.19/x - Step 3: Cross multiply
717,249.26x = 989,802.40 × 390,557.19 - Step 4: Simplify right side
717,249.26x = 386,574,447,055.00 - Step 5: Solve for x
x = 386,574,447,055.00/717,249.26 - Step 6: Final answer
x = 538,968.07
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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.