Finding the Fourth Proportional to 432,686,787.40, 649,030,181.10 and 125,988,905.80
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Solution
The fourth proportional to 432,686,787.40, 649,030,181.10 and 125,988,905.80 is: 188,983,358.70
Step by Step Solution
- Step 1: Write the proportion equation
432,686,787.40 : 649,030,181.10 = 125,988,905.80 : x - Step 2: Convert to fraction form
432,686,787.40/649,030,181.10 = 125,988,905.80/x - Step 3: Cross multiply
432,686,787.40x = 649,030,181.10 × 125,988,905.80 - Step 4: Simplify right side
432,686,787.40x = 81,770,602,347,964,848 - Step 5: Solve for x
x = 81,770,602,347,964,848/432,686,787.40 - Step 6: Final answer
x = 188,983,358.70
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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.