Finding the Fourth Proportional to 710,478.02, 980,448.08 and 388,181.18
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Solution
The fourth proportional to 710,478.02, 980,448.08 and 388,181.18 is: 535,683.70
Step by Step Solution
- Step 1: Write the proportion equation
710,478.02 : 980,448.08 = 388,181.18 : x - Step 2: Convert to fraction form
710,478.02/980,448.08 = 388,181.18/x - Step 3: Cross multiply
710,478.02x = 980,448.08 × 388,181.18 - Step 4: Simplify right side
710,478.02x = 380,591,492,623.13 - Step 5: Solve for x
x = 380,591,492,623.13/710,478.02 - Step 6: Final answer
x = 535,683.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.