Finding the Fourth Proportional to 430,854,717.88, 646,372,871.34 and 139,699,137.16
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Solution
The fourth proportional to 430,854,717.88, 646,372,871.34 and 139,699,137.16 is: 209,578,144.70
Step by Step Solution
- Step 1: Write the proportion equation
430,854,717.88 : 646,372,871.34 = 139,699,137.16 : x - Step 2: Convert to fraction form
430,854,717.88/646,372,871.34 = 139,699,137.16/x - Step 3: Cross multiply
430,854,717.88x = 646,372,871.34 × 139,699,137.16 - Step 4: Simplify right side
430,854,717.88x = 90,297,732,409,829,696 - Step 5: Solve for x
x = 90,297,732,409,829,696/430,854,717.88 - Step 6: Final answer
x = 209,578,144.70
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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.