Finding the Fourth Proportional to 427,565,210.40, 641,347,815.60 and 366,343,207.20
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Solution
The fourth proportional to 427,565,210.40, 641,347,815.60 and 366,343,207.20 is: 549,514,810.80
Step by Step Solution
- Step 1: Write the proportion equation
427,565,210.40 : 641,347,815.60 = 366,343,207.20 : x - Step 2: Convert to fraction form
427,565,210.40/641,347,815.60 = 366,343,207.20/x - Step 3: Cross multiply
427,565,210.40x = 641,347,815.60 × 366,343,207.20 - Step 4: Simplify right side
427,565,210.40x = 234,953,415,697,618,208 - Step 5: Solve for x
x = 234,953,415,697,618,208/427,565,210.40 - Step 6: Final answer
x = 549,514,810.80
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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.