Finding the Fourth Proportional to 724,374,977.20, 1,086,562,465.80 and 668,414,239.90
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Solution
The fourth proportional to 724,374,977.20, 1,086,562,465.80 and 668,414,239.90 is: 1,002,621,359.85
Step by Step Solution
- Step 1: Write the proportion equation
724,374,977.20 : 1,086,562,465.80 = 668,414,239.90 : x - Step 2: Convert to fraction form
724,374,977.20/1,086,562,465.80 = 668,414,239.90/x - Step 3: Cross multiply
724,374,977.20x = 1,086,562,465.80 × 668,414,239.90 - Step 4: Simplify right side
724,374,977.20x = 726,273,824,681,576,704 - Step 5: Solve for x
x = 726,273,824,681,576,704/724,374,977.20 - Step 6: Final answer
x = 1,002,621,359.85
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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.