Finding the Fourth Proportional to 431,386,408.90, 647,015,829.99 and 158,693,402.98
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Solution
The fourth proportional to 431,386,408.90, 647,015,829.99 and 158,693,402.98 is: 238,016,640.59
Step by Step Solution
- Step 1: Write the proportion equation
431,386,408.90 : 647,015,829.99 = 158,693,402.98 : x - Step 2: Convert to fraction form
431,386,408.90/647,015,829.99 = 158,693,402.98/x - Step 3: Cross multiply
431,386,408.90x = 647,015,829.99 × 158,693,402.98 - Step 4: Simplify right side
431,386,408.90x = 102,677,143,843,042,240 - Step 5: Solve for x
x = 102,677,143,843,042,240/431,386,408.90 - Step 6: Final answer
x = 238,016,640.59
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.