Finding the Fourth Proportional to 898,622,987.20, 1,347,934,480.80 and 838,156,811.20
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Solution
The fourth proportional to 898,622,987.20, 1,347,934,480.80 and 838,156,811.20 is: 1,257,235,216.80
Step by Step Solution
- Step 1: Write the proportion equation
898,622,987.20 : 1,347,934,480.80 = 838,156,811.20 : x - Step 2: Convert to fraction form
898,622,987.20/1,347,934,480.80 = 838,156,811.20/x - Step 3: Cross multiply
898,622,987.20x = 1,347,934,480.80 × 838,156,811.20 - Step 4: Simplify right side
898,622,987.20x = 1,129,780,466,133,855,616 - Step 5: Solve for x
x = 1,129,780,466,133,855,616/898,622,987.20 - Step 6: Final answer
x = 1,257,235,216.80
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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.