Finding the Fourth Proportional to 790,936,331.79, 1,186,634,864.65 and 354,134,864.02
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Solution
The fourth proportional to 790,936,331.79, 1,186,634,864.65 and 354,134,864.02 is: 531,305,440.84
Step by Step Solution
- Step 1: Write the proportion equation
790,936,331.79 : 1,186,634,864.65 = 354,134,864.02 : x - Step 2: Convert to fraction form
790,936,331.79/1,186,634,864.65 = 354,134,864.02/x - Step 3: Cross multiply
790,936,331.79x = 1,186,634,864.65 × 354,134,864.02 - Step 4: Simplify right side
790,936,331.79x = 420,228,776,435,104,128 - Step 5: Solve for x
x = 420,228,776,435,104,128/790,936,331.79 - Step 6: Final answer
x = 531,305,440.84
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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.