Finding the Fourth Proportional to 1,031,080,101.63, 1,422,890,461.34 and 561,184,791.76
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Solution
The fourth proportional to 1,031,080,101.63, 1,422,890,461.34 and 561,184,791.76 is: 774,434,969.68
Step by Step Solution
- Step 1: Write the proportion equation
1,031,080,101.63 : 1,422,890,461.34 = 561,184,791.76 : x - Step 2: Convert to fraction form
1,031,080,101.63/1,422,890,461.34 = 561,184,791.76/x - Step 3: Cross multiply
1,031,080,101.63x = 1,422,890,461.34 × 561,184,791.76 - Step 4: Simplify right side
1,031,080,101.63x = 798,504,487,244,378,112 - Step 5: Solve for x
x = 798,504,487,244,378,112/1,031,080,101.63 - Step 6: Final answer
x = 774,434,969.68
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Double scale
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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.