Finding the Fourth Proportional to 731,246,166.55, 1,009,121,626.18 and 396,718,671.68
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Solution
The fourth proportional to 731,246,166.55, 1,009,121,626.18 and 396,718,671.68 is: 547,472,806.58
Step by Step Solution
- Step 1: Write the proportion equation
731,246,166.55 : 1,009,121,626.18 = 396,718,671.68 : x - Step 2: Convert to fraction form
731,246,166.55/1,009,121,626.18 = 396,718,671.68/x - Step 3: Cross multiply
731,246,166.55x = 1,009,121,626.18 × 396,718,671.68 - Step 4: Simplify right side
731,246,166.55x = 400,337,391,100,945,472 - Step 5: Solve for x
x = 400,337,391,100,945,472/731,246,166.55 - Step 6: Final answer
x = 547,472,806.58
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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.