Finding the Fourth Proportional to 438,620,070.80, 657,930,106.20 and 352,526,628.80
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Solution
The fourth proportional to 438,620,070.80, 657,930,106.20 and 352,526,628.80 is: 528,789,943.20
Step by Step Solution
- Step 1: Write the proportion equation
438,620,070.80 : 657,930,106.20 = 352,526,628.80 : x - Step 2: Convert to fraction form
438,620,070.80/657,930,106.20 = 352,526,628.80/x - Step 3: Cross multiply
438,620,070.80x = 657,930,106.20 × 352,526,628.80 - Step 4: Simplify right side
438,620,070.80x = 231,937,882,324,712,000 - Step 5: Solve for x
x = 231,937,882,324,712,000/438,620,070.80 - Step 6: Final answer
x = 528,789,943.20
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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.