Finding the Fourth Proportional to 869,553,615.20, 1,303,883,618.70 and 256,058,124.80
Calculator
Solution
The fourth proportional to 869,553,615.20, 1,303,883,618.70 and 256,058,124.80 is: 383,955,616.45
Step by Step Solution
- Step 1: Write the proportion equation
869,553,615.20 : 1,303,883,618.70 = 256,058,124.80 : x - Step 2: Convert to fraction form
869,553,615.20/1,303,883,618.70 = 256,058,124.80/x - Step 3: Cross multiply
869,553,615.20x = 1,303,883,618.70 × 256,058,124.80 - Step 4: Simplify right side
869,553,615.20x = 333,869,994,361,760,256 - Step 5: Solve for x
x = 333,869,994,361,760,256/869,553,615.20 - Step 6: Final answer
x = 383,955,616.45
Related Problems
Find fourth proportional to 434,776,807.60, 651,941,809.35 and 128,029,062.40
Half scale
Find fourth proportional to 1,739,107,230.40, 2,607,767,237.40 and 512,116,249.60
Double scale
Find fourth proportional to 869,553,616.20, 1,303,883,620.20 and 256,058,125.80
Similar ratio
Find fourth proportional to 1,304,330,422.80, 1,955,825,428.05 and 384,087,187.20
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.