Finding the Fourth Proportional to 756,016,088.40, 1,134,024,132.60 and 678,531,990.60
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Solution
The fourth proportional to 756,016,088.40, 1,134,024,132.60 and 678,531,990.60 is: 1,017,797,985.90
Step by Step Solution
- Step 1: Write the proportion equation
756,016,088.40 : 1,134,024,132.60 = 678,531,990.60 : x - Step 2: Convert to fraction form
756,016,088.40/1,134,024,132.60 = 678,531,990.60/x - Step 3: Cross multiply
756,016,088.40x = 1,134,024,132.60 × 678,531,990.60 - Step 4: Simplify right side
756,016,088.40x = 769,471,652,081,516,288 - Step 5: Solve for x
x = 769,471,652,081,516,288/756,016,088.40 - Step 6: Final answer
x = 1,017,797,985.90
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Double scale
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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.