Finding the Fourth Proportional to 638,649,866.82, 957,970,780.35 and 343,683,929.23
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Solution
The fourth proportional to 638,649,866.82, 957,970,780.35 and 343,683,929.23 is: 515,523,730.59
Step by Step Solution
- Step 1: Write the proportion equation
638,649,866.82 : 957,970,780.35 = 343,683,929.23 : x - Step 2: Convert to fraction form
638,649,866.82/957,970,780.35 = 343,683,929.23/x - Step 3: Cross multiply
638,649,866.82x = 957,970,780.35 × 343,683,929.23 - Step 4: Simplify right side
638,649,866.82x = 329,239,161,878,217,280 - Step 5: Solve for x
x = 329,239,161,878,217,280/638,649,866.82 - Step 6: Final answer
x = 515,523,730.59
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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.