Finding the Fourth Proportional to 891,931,501.20, 1,337,897,251.80 and 659,479,207.80
Calculator
Solution
The fourth proportional to 891,931,501.20, 1,337,897,251.80 and 659,479,207.80 is: 989,218,811.70
Step by Step Solution
- Step 1: Write the proportion equation
891,931,501.20 : 1,337,897,251.80 = 659,479,207.80 : x - Step 2: Convert to fraction form
891,931,501.20/1,337,897,251.80 = 659,479,207.80/x - Step 3: Cross multiply
891,931,501.20x = 1,337,897,251.80 × 659,479,207.80 - Step 4: Simplify right side
891,931,501.20x = 882,315,419,734,861,056 - Step 5: Solve for x
x = 882,315,419,734,861,056/891,931,501.20 - Step 6: Final answer
x = 989,218,811.70
Related Problems
Find fourth proportional to 445,965,750.60, 668,948,625.90 and 329,739,603.90
Half scale
Find fourth proportional to 1,783,863,002.40, 2,675,794,503.60 and 1,318,958,415.60
Double scale
Find fourth proportional to 891,931,502.20, 1,337,897,253.30 and 659,479,208.80
Similar ratio
Find fourth proportional to 1,337,897,251.80, 2,006,845,877.70 and 989,218,811.70
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.