Finding the Fourth Proportional to 639,705,822.13, 959,558,733.19 and 155,031,630.13
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Solution
The fourth proportional to 639,705,822.13, 959,558,733.19 and 155,031,630.13 is: 232,547,445.19
Step by Step Solution
- Step 1: Write the proportion equation
639,705,822.13 : 959,558,733.19 = 155,031,630.13 : x - Step 2: Convert to fraction form
639,705,822.13/959,558,733.19 = 155,031,630.13/x - Step 3: Cross multiply
639,705,822.13x = 959,558,733.19 × 155,031,630.13 - Step 4: Simplify right side
639,705,822.13x = 148,761,954,611,923,424 - Step 5: Solve for x
x = 148,761,954,611,923,424/639,705,822.13 - Step 6: Final answer
x = 232,547,445.19
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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.