Finding the Fourth Proportional to 665,280,661.20, 997,920,991.80 and 276,974,437.20
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Solution
The fourth proportional to 665,280,661.20, 997,920,991.80 and 276,974,437.20 is: 415,461,655.80
Step by Step Solution
- Step 1: Write the proportion equation
665,280,661.20 : 997,920,991.80 = 276,974,437.20 : x - Step 2: Convert to fraction form
665,280,661.20/997,920,991.80 = 276,974,437.20/x - Step 3: Cross multiply
665,280,661.20x = 997,920,991.80 × 276,974,437.20 - Step 4: Simplify right side
665,280,661.20x = 276,398,605,073,870,784 - Step 5: Solve for x
x = 276,398,605,073,870,784/665,280,661.20 - Step 6: Final answer
x = 415,461,655.80
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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.