Finding the Fourth Proportional to 828,995,075.10, 1,244,288,875.05 and 420,512,463.90
Calculator
Solution
The fourth proportional to 828,995,075.10, 1,244,288,875.05 and 420,512,463.90 is: 631,172,604.48
Step by Step Solution
- Step 1: Write the proportion equation
828,995,075.10 : 1,244,288,875.05 = 420,512,463.90 : x - Step 2: Convert to fraction form
828,995,075.10/1,244,288,875.05 = 420,512,463.90/x - Step 3: Cross multiply
828,995,075.10x = 1,244,288,875.05 × 420,512,463.90 - Step 4: Simplify right side
828,995,075.10x = 523,238,980,650,634,688 - Step 5: Solve for x
x = 523,238,980,650,634,688/828,995,075.10 - Step 6: Final answer
x = 631,172,604.48
Related Problems
Find fourth proportional to 414,497,537.55, 622,144,437.53 and 210,256,231.95
Half scale
Find fourth proportional to 1,657,990,150.20, 2,488,577,750.10 and 841,024,927.80
Double scale
Find fourth proportional to 828,995,076.10, 1,244,288,876.55 and 420,512,464.90
Similar ratio
Find fourth proportional to 1,243,492,612.65, 1,866,433,312.58 and 630,768,695.85
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.