Finding the Fourth Proportional to 525,312,136.80, 787,968,205.20 and 518,145,775.20
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Solution
The fourth proportional to 525,312,136.80, 787,968,205.20 and 518,145,775.20 is: 777,218,662.80
Step by Step Solution
- Step 1: Write the proportion equation
525,312,136.80 : 787,968,205.20 = 518,145,775.20 : x - Step 2: Convert to fraction form
525,312,136.80/787,968,205.20 = 518,145,775.20/x - Step 3: Cross multiply
525,312,136.80x = 787,968,205.20 × 518,145,775.20 - Step 4: Simplify right side
525,312,136.80x = 408,282,396,516,306,688 - Step 5: Solve for x
x = 408,282,396,516,306,688/525,312,136.80 - Step 6: Final answer
x = 777,218,662.80
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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.