Finding the Fourth Proportional to 1,621,383,182.97, 2,237,512,089.56 and 878,827,748.73
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Solution
The fourth proportional to 1,621,383,182.97, 2,237,512,089.56 and 878,827,748.73 is: 1,212,784,080.33
Step by Step Solution
- Step 1: Write the proportion equation
1,621,383,182.97 : 2,237,512,089.56 = 878,827,748.73 : x - Step 2: Convert to fraction form
1,621,383,182.97/2,237,512,089.56 = 878,827,748.73/x - Step 3: Cross multiply
1,621,383,182.97x = 2,237,512,089.56 × 878,827,748.73 - Step 4: Simplify right side
1,621,383,182.97x = 1,966,387,712,424,173,056 - Step 5: Solve for x
x = 1,966,387,712,424,173,056/1,621,383,182.97 - Step 6: Final answer
x = 1,212,784,080.33
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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.