Finding the Fourth Proportional to 869,077,514.70, 1,303,616,272.05 and 409,912,490.70
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Solution
The fourth proportional to 869,077,514.70, 1,303,616,272.05 and 409,912,490.70 is: 614,868,736.05
Step by Step Solution
- Step 1: Write the proportion equation
869,077,514.70 : 1,303,616,272.05 = 409,912,490.70 : x - Step 2: Convert to fraction form
869,077,514.70/1,303,616,272.05 = 409,912,490.70/x - Step 3: Cross multiply
869,077,514.70x = 1,303,616,272.05 × 409,912,490.70 - Step 4: Simplify right side
869,077,514.70x = 534,368,592,993,064,256 - Step 5: Solve for x
x = 534,368,592,993,064,256/869,077,514.70 - Step 6: Final answer
x = 614,868,736.05
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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.