Finding the Fourth Proportional to 691,092,181.70, 1,036,638,272.55 and 432,811,855.70
Calculator
Solution
The fourth proportional to 691,092,181.70, 1,036,638,272.55 and 432,811,855.70 is: 649,217,783.55
Step by Step Solution
- Step 1: Write the proportion equation
691,092,181.70 : 1,036,638,272.55 = 432,811,855.70 : x - Step 2: Convert to fraction form
691,092,181.70/1,036,638,272.55 = 432,811,855.70/x - Step 3: Cross multiply
691,092,181.70x = 1,036,638,272.55 × 432,811,855.70 - Step 4: Simplify right side
691,092,181.70x = 448,669,334,432,007,808 - Step 5: Solve for x
x = 448,669,334,432,007,808/691,092,181.70 - Step 6: Final answer
x = 649,217,783.55
Related Problems
Find fourth proportional to 345,546,090.85, 518,319,136.28 and 216,405,927.85
Half scale
Find fourth proportional to 1,382,184,363.40, 2,073,276,545.10 and 865,623,711.40
Double scale
Find fourth proportional to 691,092,182.70, 1,036,638,274.05 and 432,811,856.70
Similar ratio
Find fourth proportional to 1,036,638,272.55, 1,554,957,408.83 and 649,217,783.55
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.