Finding the Fourth Proportional to 1,081,472,416.80, 1,622,208,625.20 and 717,966,772.80
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Solution
The fourth proportional to 1,081,472,416.80, 1,622,208,625.20 and 717,966,772.80 is: 1,076,950,159.20
Step by Step Solution
- Step 1: Write the proportion equation
1,081,472,416.80 : 1,622,208,625.20 = 717,966,772.80 : x - Step 2: Convert to fraction form
1,081,472,416.80/1,622,208,625.20 = 717,966,772.80/x - Step 3: Cross multiply
1,081,472,416.80x = 1,622,208,625.20 × 717,966,772.80 - Step 4: Simplify right side
1,081,472,416.80x = 1,164,691,891,443,168,768 - Step 5: Solve for x
x = 1,164,691,891,443,168,768/1,081,472,416.80 - Step 6: Final answer
x = 1,076,950,159.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.