Finding the Fourth Proportional to 19,077,128.78, 28,615,866.14 and 5,430,269.80
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Solution
The fourth proportional to 19,077,128.78, 28,615,866.14 and 5,430,269.80 is: 8,145,453.94
Step by Step Solution
- Step 1: Write the proportion equation
19,077,128.78 : 28,615,866.14 = 5,430,269.80 : x - Step 2: Convert to fraction form
19,077,128.78/28,615,866.14 = 5,430,269.80/x - Step 3: Cross multiply
19,077,128.78x = 28,615,866.14 × 5,430,269.80 - Step 4: Simplify right side
19,077,128.78x = 155,391,873,700,884.56 - Step 5: Solve for x
x = 155,391,873,700,884.56/19,077,128.78 - Step 6: Final answer
x = 8,145,453.94
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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.