Finding the Fourth Proportional to 430,854,717.63, 646,372,870.97 and 139,699,136.91
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Solution
The fourth proportional to 430,854,717.63, 646,372,870.97 and 139,699,136.91 is: 209,578,144.33
Step by Step Solution
- Step 1: Write the proportion equation
430,854,717.63 : 646,372,870.97 = 139,699,136.91 : x - Step 2: Convert to fraction form
430,854,717.63/646,372,870.97 = 139,699,136.91/x - Step 3: Cross multiply
430,854,717.63x = 646,372,870.97 × 139,699,136.91 - Step 4: Simplify right side
430,854,717.63x = 90,297,732,195,849,296 - Step 5: Solve for x
x = 90,297,732,195,849,296/430,854,717.63 - Step 6: Final answer
x = 209,578,144.33
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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.