Finding the Fourth Proportional to 692,284.97, 955,386.06 and 390,478.97
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Solution
The fourth proportional to 692,284.97, 955,386.06 and 390,478.97 is: 538,879.48
Step by Step Solution
- Step 1: Write the proportion equation
692,284.97 : 955,386.06 = 390,478.97 : x - Step 2: Convert to fraction form
692,284.97/955,386.06 = 390,478.97/x - Step 3: Cross multiply
692,284.97x = 955,386.06 × 390,478.97 - Step 4: Simplify right side
692,284.97x = 373,058,167,049.62 - Step 5: Solve for x
x = 373,058,167,049.62/692,284.97 - Step 6: Final answer
x = 538,879.48
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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.