Finding the Fourth Proportional to 898,763,288.20, 1,348,144,932.30 and 639,430,577.80
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Solution
The fourth proportional to 898,763,288.20, 1,348,144,932.30 and 639,430,577.80 is: 959,145,866.70
Step by Step Solution
- Step 1: Write the proportion equation
898,763,288.20 : 1,348,144,932.30 = 639,430,577.80 : x - Step 2: Convert to fraction form
898,763,288.20/1,348,144,932.30 = 639,430,577.80/x - Step 3: Cross multiply
898,763,288.20x = 1,348,144,932.30 × 639,430,577.80 - Step 4: Simplify right side
898,763,288.20x = 862,045,093,018,730,752 - Step 5: Solve for x
x = 862,045,093,018,730,752/898,763,288.20 - Step 6: Final answer
x = 959,145,866.70
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Double scale
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Similar ratio
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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.