Finding the Fourth Proportional to 771,022,356.10, 1,156,643,348.85 and 239,279,721.81
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Solution
The fourth proportional to 771,022,356.10, 1,156,643,348.85 and 239,279,721.81 is: 358,953,662.70
Step by Step Solution
- Step 1: Write the proportion equation
771,022,356.10 : 1,156,643,348.85 = 239,279,721.81 : x - Step 2: Convert to fraction form
771,022,356.10/1,156,643,348.85 = 239,279,721.81/x - Step 3: Cross multiply
771,022,356.10x = 1,156,643,348.85 × 239,279,721.81 - Step 4: Simplify right side
771,022,356.10x = 276,761,298,746,214,752 - Step 5: Solve for x
x = 276,761,298,746,214,752/771,022,356.10 - Step 6: Final answer
x = 358,953,662.70
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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.