Finding the Fourth Proportional to 1,098,754,881.80, 1,648,132,322.70 and 371,743,593.80
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Solution
The fourth proportional to 1,098,754,881.80, 1,648,132,322.70 and 371,743,593.80 is: 557,615,390.70
Step by Step Solution
- Step 1: Write the proportion equation
1,098,754,881.80 : 1,648,132,322.70 = 371,743,593.80 : x - Step 2: Convert to fraction form
1,098,754,881.80/1,648,132,322.70 = 371,743,593.80/x - Step 3: Cross multiply
1,098,754,881.80x = 1,648,132,322.70 × 371,743,593.80 - Step 4: Simplify right side
1,098,754,881.80x = 612,682,632,698,439,296 - Step 5: Solve for x
x = 612,682,632,698,439,296/1,098,754,881.80 - Step 6: Final answer
x = 557,615,390.70
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.