Finding the Fourth Proportional to 1,670,813,417.48, 2,305,740,869.04 and 918,126,787.76
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Solution
The fourth proportional to 1,670,813,417.48, 2,305,740,869.04 and 918,126,787.76 is: 1,267,025,052.20
Step by Step Solution
- Step 1: Write the proportion equation
1,670,813,417.48 : 2,305,740,869.04 = 918,126,787.76 : x - Step 2: Convert to fraction form
1,670,813,417.48/2,305,740,869.04 = 918,126,787.76/x - Step 3: Cross multiply
1,670,813,417.48x = 2,305,740,869.04 × 918,126,787.76 - Step 4: Simplify right side
1,670,813,417.48x = 2,116,962,457,498,646,016 - Step 5: Solve for x
x = 2,116,962,457,498,646,016/1,670,813,417.48 - Step 6: Final answer
x = 1,267,025,052.20
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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.