Finding the Fourth Proportional to 769,813,848.40, 1,154,720,772.60 and 724,464,216.40
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Solution
The fourth proportional to 769,813,848.40, 1,154,720,772.60 and 724,464,216.40 is: 1,086,696,324.60
Step by Step Solution
- Step 1: Write the proportion equation
769,813,848.40 : 1,154,720,772.60 = 724,464,216.40 : x - Step 2: Convert to fraction form
769,813,848.40/1,154,720,772.60 = 724,464,216.40/x - Step 3: Cross multiply
769,813,848.40x = 1,154,720,772.60 × 724,464,216.40 - Step 4: Simplify right side
769,813,848.40x = 836,553,879,682,461,440 - Step 5: Solve for x
x = 836,553,879,682,461,440/769,813,848.40 - Step 6: Final answer
x = 1,086,696,324.60
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Similar ratio
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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.