Finding the Fourth Proportional to 871,279,935.40, 1,306,919,903.10 and 866,178,101.80
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Solution
The fourth proportional to 871,279,935.40, 1,306,919,903.10 and 866,178,101.80 is: 1,299,267,152.70
Step by Step Solution
- Step 1: Write the proportion equation
871,279,935.40 : 1,306,919,903.10 = 866,178,101.80 : x - Step 2: Convert to fraction form
871,279,935.40/1,306,919,903.10 = 866,178,101.80/x - Step 3: Cross multiply
871,279,935.40x = 1,306,919,903.10 × 866,178,101.80 - Step 4: Simplify right side
871,279,935.40x = 1,132,025,400,871,797,760 - Step 5: Solve for x
x = 1,132,025,400,871,797,760/871,279,935.40 - Step 6: Final answer
x = 1,299,267,152.70
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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.