Finding the Fourth Proportional to 521,625,999.30, 782,438,998.95 and 249,528,207.30
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Solution
The fourth proportional to 521,625,999.30, 782,438,998.95 and 249,528,207.30 is: 374,292,310.95
Step by Step Solution
- Step 1: Write the proportion equation
521,625,999.30 : 782,438,998.95 = 249,528,207.30 : x - Step 2: Convert to fraction form
521,625,999.30/782,438,998.95 = 249,528,207.30/x - Step 3: Cross multiply
521,625,999.30x = 782,438,998.95 × 249,528,207.30 - Step 4: Simplify right side
521,625,999.30x = 195,240,600,729,600,096 - Step 5: Solve for x
x = 195,240,600,729,600,096/521,625,999.30 - Step 6: Final answer
x = 374,292,310.95
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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.