Finding the Fourth Proportional to 862,166,145.80, 1,293,249,218.70 and 499,369,089.80
Calculator
Solution
The fourth proportional to 862,166,145.80, 1,293,249,218.70 and 499,369,089.80 is: 749,053,634.70
Step by Step Solution
- Step 1: Write the proportion equation
862,166,145.80 : 1,293,249,218.70 = 499,369,089.80 : x - Step 2: Convert to fraction form
862,166,145.80/1,293,249,218.70 = 499,369,089.80/x - Step 3: Cross multiply
862,166,145.80x = 1,293,249,218.70 × 499,369,089.80 - Step 4: Simplify right side
862,166,145.80x = 645,808,685,226,780,160 - Step 5: Solve for x
x = 645,808,685,226,780,160/862,166,145.80 - Step 6: Final answer
x = 749,053,634.70
Related Problems
Find fourth proportional to 431,083,072.90, 646,624,609.35 and 249,684,544.90
Half scale
Find fourth proportional to 1,724,332,291.60, 2,586,498,437.40 and 998,738,179.60
Double scale
Find fourth proportional to 862,166,146.80, 1,293,249,220.20 and 499,369,090.80
Similar ratio
Find fourth proportional to 1,293,249,218.70, 1,939,873,828.05 and 749,053,634.70
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.