Finding the Fourth Proportional to 385,371,808.20, 577,889,750.70 and 155,264,416.20
Calculator
Solution
The fourth proportional to 385,371,808.20, 577,889,750.70 and 155,264,416.20 is: 232,828,953.39
Step by Step Solution
- Step 1: Write the proportion equation
385,371,808.20 : 577,889,750.70 = 155,264,416.20 : x - Step 2: Convert to fraction form
385,371,808.20/577,889,750.70 = 155,264,416.20/x - Step 3: Cross multiply
385,371,808.20x = 577,889,750.70 × 155,264,416.20 - Step 4: Simplify right side
385,371,808.20x = 89,725,714,770,399,040 - Step 5: Solve for x
x = 89,725,714,770,399,040/385,371,808.20 - Step 6: Final answer
x = 232,828,953.39
Related Problems
Find fourth proportional to 192,685,904.10, 288,944,875.35 and 77,632,208.10
Half scale
Find fourth proportional to 770,743,616.40, 1,155,779,501.40 and 310,528,832.40
Double scale
Find fourth proportional to 385,371,809.20, 577,889,752.20 and 155,264,417.20
Similar ratio
Find fourth proportional to 578,057,712.30, 866,834,626.05 and 232,896,624.30
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.