Finding the Fourth Proportional to 1,939,689,270.40, 2,909,533,905.60 and 559,548,803.20
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Solution
The fourth proportional to 1,939,689,270.40, 2,909,533,905.60 and 559,548,803.20 is: 839,323,204.80
Step by Step Solution
- Step 1: Write the proportion equation
1,939,689,270.40 : 2,909,533,905.60 = 559,548,803.20 : x - Step 2: Convert to fraction form
1,939,689,270.40/2,909,533,905.60 = 559,548,803.20/x - Step 3: Cross multiply
1,939,689,270.40x = 2,909,533,905.60 × 559,548,803.20 - Step 4: Simplify right side
1,939,689,270.40x = 1,628,026,214,748,301,824 - Step 5: Solve for x
x = 1,628,026,214,748,301,824/1,939,689,270.40 - Step 6: Final answer
x = 839,323,204.80
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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.