Finding the Fourth Proportional to 1,259,714,564.80, 1,889,571,847.20 and 1,055,641,220.80
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Solution
The fourth proportional to 1,259,714,564.80, 1,889,571,847.20 and 1,055,641,220.80 is: 1,583,461,831.20
Step by Step Solution
- Step 1: Write the proportion equation
1,259,714,564.80 : 1,889,571,847.20 = 1,055,641,220.80 : x - Step 2: Convert to fraction form
1,259,714,564.80/1,889,571,847.20 = 1,055,641,220.80/x - Step 3: Cross multiply
1,259,714,564.80x = 1,889,571,847.20 × 1,055,641,220.80 - Step 4: Simplify right side
1,259,714,564.80x = 1,994,709,931,567,518,976 - Step 5: Solve for x
x = 1,994,709,931,567,518,976/1,259,714,564.80 - Step 6: Final answer
x = 1,583,461,831.20
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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.