Finding the Fourth Proportional to 692,242.98, 955,296.09 and 390,436.98
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Solution
The fourth proportional to 692,242.98, 955,296.09 and 390,436.98 is: 538,803.47
Step by Step Solution
- Step 1: Write the proportion equation
692,242.98 : 955,296.09 = 390,436.98 : x - Step 2: Convert to fraction form
692,242.98/955,296.09 = 390,436.98/x - Step 3: Cross multiply
692,242.98x = 955,296.09 × 390,436.98 - Step 4: Simplify right side
692,242.98x = 372,982,920,385.41 - Step 5: Solve for x
x = 372,982,920,385.41/692,242.98 - Step 6: Final answer
x = 538,803.47
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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.