Finding the Fourth Proportional to 438,620,675.80, 657,931,013.70 and 352,527,233.80
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Solution
The fourth proportional to 438,620,675.80, 657,931,013.70 and 352,527,233.80 is: 528,790,850.70
Step by Step Solution
- Step 1: Write the proportion equation
438,620,675.80 : 657,931,013.70 = 352,527,233.80 : x - Step 2: Convert to fraction form
438,620,675.80/657,931,013.70 = 352,527,233.80/x - Step 3: Cross multiply
438,620,675.80x = 657,931,013.70 × 352,527,233.80 - Step 4: Simplify right side
438,620,675.80x = 231,938,600,290,890,912 - Step 5: Solve for x
x = 231,938,600,290,890,912/438,620,675.80 - Step 6: Final answer
x = 528,790,850.70
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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.