Finding the Fourth Proportional to 878,893,236.18, 1,213,879,289.48 and 578,819,944.04
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Solution
The fourth proportional to 878,893,236.18, 1,213,879,289.48 and 578,819,944.04 is: 799,434,463.11
Step by Step Solution
- Step 1: Write the proportion equation
878,893,236.18 : 1,213,879,289.48 = 578,819,944.04 : x - Step 2: Convert to fraction form
878,893,236.18/1,213,879,289.48 = 578,819,944.04/x - Step 3: Cross multiply
878,893,236.18x = 1,213,879,289.48 × 578,819,944.04 - Step 4: Simplify right side
878,893,236.18x = 702,617,542,399,164,928 - Step 5: Solve for x
x = 702,617,542,399,164,928/878,893,236.18 - Step 6: Final answer
x = 799,434,463.11
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Double scale
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1.5x scale
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.