Finding the Fourth Proportional to 1,031,626,202.94, 1,423,638,096.21 and 561,726,398.79
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Solution
The fourth proportional to 1,031,626,202.94, 1,423,638,096.21 and 561,726,398.79 is: 775,179,128.53
Step by Step Solution
- Step 1: Write the proportion equation
1,031,626,202.94 : 1,423,638,096.21 = 561,726,398.79 : x - Step 2: Convert to fraction form
1,031,626,202.94/1,423,638,096.21 = 561,726,398.79/x - Step 3: Cross multiply
1,031,626,202.94x = 1,423,638,096.21 × 561,726,398.79 - Step 4: Simplify right side
1,031,626,202.94x = 799,695,100,964,294,784 - Step 5: Solve for x
x = 799,695,100,964,294,784/1,031,626,202.94 - Step 6: Final answer
x = 775,179,128.53
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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.