Finding the Fourth Proportional to 870,935,998.40, 1,306,403,997.60 and 804,423,204.80
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Solution
The fourth proportional to 870,935,998.40, 1,306,403,997.60 and 804,423,204.80 is: 1,206,634,807.20
Step by Step Solution
- Step 1: Write the proportion equation
870,935,998.40 : 1,306,403,997.60 = 804,423,204.80 : x - Step 2: Convert to fraction form
870,935,998.40/1,306,403,997.60 = 804,423,204.80/x - Step 3: Cross multiply
870,935,998.40x = 1,306,403,997.60 × 804,423,204.80 - Step 4: Simplify right side
870,935,998.40x = 1,050,901,690,512,923,392 - Step 5: Solve for x
x = 1,050,901,690,512,923,392/870,935,998.40 - Step 6: Final answer
x = 1,206,634,807.20
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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.