Finding the Fourth Proportional to 432,685,998.90, 649,028,998.35 and 125,988,117.30
Calculator
Solution
The fourth proportional to 432,685,998.90, 649,028,998.35 and 125,988,117.30 is: 188,982,175.95
Step by Step Solution
- Step 1: Write the proportion equation
432,685,998.90 : 649,028,998.35 = 125,988,117.30 : x - Step 2: Convert to fraction form
432,685,998.90/649,028,998.35 = 125,988,117.30/x - Step 3: Cross multiply
432,685,998.90x = 649,028,998.35 × 125,988,117.30 - Step 4: Simplify right side
432,685,998.90x = 81,769,941,575,221,312 - Step 5: Solve for x
x = 81,769,941,575,221,312/432,685,998.90 - Step 6: Final answer
x = 188,982,175.95
Related Problems
Find fourth proportional to 216,342,999.45, 324,514,499.18 and 62,994,058.65
Half scale
Find fourth proportional to 865,371,997.80, 1,298,057,996.70 and 251,976,234.60
Double scale
Find fourth proportional to 432,685,999.90, 649,028,999.85 and 125,988,118.30
Similar ratio
Find fourth proportional to 649,028,998.35, 973,543,497.53 and 188,982,175.95
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.