Finding the Fourth Proportional to 1,207,714,779.95, 1,811,123,618.87 and 420,566,292.68
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Solution
The fourth proportional to 1,207,714,779.95, 1,811,123,618.87 and 420,566,292.68 is: 630,693,238.68
Step by Step Solution
- Step 1: Write the proportion equation
1,207,714,779.95 : 1,811,123,618.87 = 420,566,292.68 : x - Step 2: Convert to fraction form
1,207,714,779.95/1,811,123,618.87 = 420,566,292.68/x - Step 3: Cross multiply
1,207,714,779.95x = 1,811,123,618.87 × 420,566,292.68 - Step 4: Simplify right side
1,207,714,779.95x = 761,697,545,965,336,960 - Step 5: Solve for x
x = 761,697,545,965,336,960/1,207,714,779.95 - Step 6: Final answer
x = 630,693,238.68
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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.