Finding the Fourth Proportional to 9,528,977.76, 13,149,979.24 and 5,178,053.68
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Solution
The fourth proportional to 9,528,977.76, 13,149,979.24 and 5,178,053.68 is: 7,145,708.61
Step by Step Solution
- Step 1: Write the proportion equation
9,528,977.76 : 13,149,979.24 = 5,178,053.68 : x - Step 2: Convert to fraction form
9,528,977.76/13,149,979.24 = 5,178,053.68/x - Step 3: Cross multiply
9,528,977.76x = 13,149,979.24 × 5,178,053.68 - Step 4: Simplify right side
9,528,977.76x = 68,091,298,395,605.60 - Step 5: Solve for x
x = 68,091,298,395,605.60/9,528,977.76 - Step 6: Final answer
x = 7,145,708.61
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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.