Finding the Fourth Proportional to 521,640,688.05, 782,461,032.08 and 368,585,680.05
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Solution
The fourth proportional to 521,640,688.05, 782,461,032.08 and 368,585,680.05 is: 552,878,520.08
Step by Step Solution
- Step 1: Write the proportion equation
521,640,688.05 : 782,461,032.08 = 368,585,680.05 : x - Step 2: Convert to fraction form
521,640,688.05/782,461,032.08 = 368,585,680.05/x - Step 3: Cross multiply
521,640,688.05x = 782,461,032.08 × 368,585,680.05 - Step 4: Simplify right side
521,640,688.05x = 288,403,931,619,988,736 - Step 5: Solve for x
x = 288,403,931,619,988,736/521,640,688.05 - Step 6: Final answer
x = 552,878,520.08
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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.