Finding the Fourth Proportional to 878,929,060.76, 1,212,370,389.35 and 521,443,743.68
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Solution
The fourth proportional to 878,929,060.76, 1,212,370,389.35 and 521,443,743.68 is: 719,265,049.67
Step by Step Solution
- Step 1: Write the proportion equation
878,929,060.76 : 1,212,370,389.35 = 521,443,743.68 : x - Step 2: Convert to fraction form
878,929,060.76/1,212,370,389.35 = 521,443,743.68/x - Step 3: Cross multiply
878,929,060.76x = 1,212,370,389.35 × 521,443,743.68 - Step 4: Simplify right side
878,929,060.76x = 632,182,954,543,381,376 - Step 5: Solve for x
x = 632,182,954,543,381,376/878,929,060.76 - Step 6: Final answer
x = 719,265,049.67
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.