Finding the Fourth Proportional to 2,197,658,213.40, 3,296,487,320.10 and 817,187,071.80
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Solution
The fourth proportional to 2,197,658,213.40, 3,296,487,320.10 and 817,187,071.80 is: 1,225,780,607.70
Step by Step Solution
- Step 1: Write the proportion equation
2,197,658,213.40 : 3,296,487,320.10 = 817,187,071.80 : x - Step 2: Convert to fraction form
2,197,658,213.40/3,296,487,320.10 = 817,187,071.80/x - Step 3: Cross multiply
2,197,658,213.40x = 3,296,487,320.10 × 817,187,071.80 - Step 4: Simplify right side
2,197,658,213.40x = 2,693,846,820,338,348,032 - Step 5: Solve for x
x = 2,693,846,820,338,348,032/2,197,658,213.40 - Step 6: Final answer
x = 1,225,780,607.70
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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.