Finding the Fourth Proportional to 405,136,558.78, 558,779,983.41 and 348,717,329.05
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Solution
The fourth proportional to 405,136,558.78, 558,779,983.41 and 348,717,329.05 is: 480,964,403.53
Step by Step Solution
- Step 1: Write the proportion equation
405,136,558.78 : 558,779,983.41 = 348,717,329.05 : x - Step 2: Convert to fraction form
405,136,558.78/558,779,983.41 = 348,717,329.05/x - Step 3: Cross multiply
405,136,558.78x = 558,779,983.41 × 348,717,329.05 - Step 4: Simplify right side
405,136,558.78x = 194,856,263,341,338,496 - Step 5: Solve for x
x = 194,856,263,341,338,496/405,136,558.78 - Step 6: Final answer
x = 480,964,403.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.