Finding the Fourth Proportional to 871,098,971.49, 1,202,101,443.36 and 474,625,218.60
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Solution
The fourth proportional to 871,098,971.49, 1,202,101,443.36 and 474,625,218.60 is: 654,974,553.99
Step by Step Solution
- Step 1: Write the proportion equation
871,098,971.49 : 1,202,101,443.36 = 474,625,218.60 : x - Step 2: Convert to fraction form
871,098,971.49/1,202,101,443.36 = 474,625,218.60/x - Step 3: Cross multiply
871,098,971.49x = 1,202,101,443.36 × 474,625,218.60 - Step 4: Simplify right side
871,098,971.49x = 570,547,660,334,115,520 - Step 5: Solve for x
x = 570,547,660,334,115,520/871,098,971.49 - Step 6: Final answer
x = 654,974,553.99
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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.