Finding the Fourth Proportional to 878,929,060.25, 1,212,370,388.66 and 521,443,743.18
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Solution
The fourth proportional to 878,929,060.25, 1,212,370,388.66 and 521,443,743.18 is: 719,265,048.99
Step by Step Solution
- Step 1: Write the proportion equation
878,929,060.25 : 1,212,370,388.66 = 521,443,743.18 : x - Step 2: Convert to fraction form
878,929,060.25/1,212,370,388.66 = 521,443,743.18/x - Step 3: Cross multiply
878,929,060.25x = 1,212,370,388.66 × 521,443,743.18 - Step 4: Simplify right side
878,929,060.25x = 632,182,953,580,219,008 - Step 5: Solve for x
x = 632,182,953,580,219,008/878,929,060.25 - Step 6: Final answer
x = 719,265,048.99
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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.