Finding the Fourth Proportional to 905,858,230.40, 1,358,787,345.60 and 542,165,379.20
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Solution
The fourth proportional to 905,858,230.40, 1,358,787,345.60 and 542,165,379.20 is: 813,248,068.80
Step by Step Solution
- Step 1: Write the proportion equation
905,858,230.40 : 1,358,787,345.60 = 542,165,379.20 : x - Step 2: Convert to fraction form
905,858,230.40/1,358,787,345.60 = 542,165,379.20/x - Step 3: Cross multiply
905,858,230.40x = 1,358,787,345.60 × 542,165,379.20 - Step 4: Simplify right side
905,858,230.40x = 736,687,456,479,385,472 - Step 5: Solve for x
x = 736,687,456,479,385,472/905,858,230.40 - Step 6: Final answer
x = 813,248,068.80
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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.