Finding the Fourth Proportional to 1,121,010,398.70, 1,681,515,598.05 and 654,192,624.30
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Solution
The fourth proportional to 1,121,010,398.70, 1,681,515,598.05 and 654,192,624.30 is: 981,288,936.45
Step by Step Solution
- Step 1: Write the proportion equation
1,121,010,398.70 : 1,681,515,598.05 = 654,192,624.30 : x - Step 2: Convert to fraction form
1,121,010,398.70/1,681,515,598.05 = 654,192,624.30/x - Step 3: Cross multiply
1,121,010,398.70x = 1,681,515,598.05 × 654,192,624.30 - Step 4: Simplify right side
1,121,010,398.70x = 1,100,035,101,889,713,408 - Step 5: Solve for x
x = 1,100,035,101,889,713,408/1,121,010,398.70 - Step 6: Final answer
x = 981,288,936.45
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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.