Finding the Fourth Proportional to 393,939,420.40, 590,909,130.60 and 121,393,730.80
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Solution
The fourth proportional to 393,939,420.40, 590,909,130.60 and 121,393,730.80 is: 182,090,596.20
Step by Step Solution
- Step 1: Write the proportion equation
393,939,420.40 : 590,909,130.60 = 121,393,730.80 : x - Step 2: Convert to fraction form
393,939,420.40/590,909,130.60 = 121,393,730.80/x - Step 3: Cross multiply
393,939,420.40x = 590,909,130.60 × 121,393,730.80 - Step 4: Simplify right side
393,939,420.40x = 71,732,663,927,318,440 - Step 5: Solve for x
x = 71,732,663,927,318,440/393,939,420.40 - Step 6: Final answer
x = 182,090,596.20
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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.