Finding the Fourth Proportional to 969,026,318.40, 1,453,539,477.60 and 861,887,812.80
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Solution
The fourth proportional to 969,026,318.40, 1,453,539,477.60 and 861,887,812.80 is: 1,292,831,719.20
Step by Step Solution
- Step 1: Write the proportion equation
969,026,318.40 : 1,453,539,477.60 = 861,887,812.80 : x - Step 2: Convert to fraction form
969,026,318.40/1,453,539,477.60 = 861,887,812.80/x - Step 3: Cross multiply
969,026,318.40x = 1,453,539,477.60 × 861,887,812.80 - Step 4: Simplify right side
969,026,318.40x = 1,252,787,961,167,118,336 - Step 5: Solve for x
x = 1,252,787,961,167,118,336/969,026,318.40 - Step 6: Final answer
x = 1,292,831,719.20
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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.