Finding the Fourth Proportional to 756,016,082.90, 1,134,024,124.35 and 678,531,985.10
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Solution
The fourth proportional to 756,016,082.90, 1,134,024,124.35 and 678,531,985.10 is: 1,017,797,977.65
Step by Step Solution
- Step 1: Write the proportion equation
756,016,082.90 : 1,134,024,124.35 = 678,531,985.10 : x - Step 2: Convert to fraction form
756,016,082.90/1,134,024,124.35 = 678,531,985.10/x - Step 3: Cross multiply
756,016,082.90x = 1,134,024,124.35 × 678,531,985.10 - Step 4: Simplify right side
756,016,082.90x = 769,471,640,246,494,720 - Step 5: Solve for x
x = 769,471,640,246,494,720/756,016,082.90 - Step 6: Final answer
x = 1,017,797,977.65
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Double scale
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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.