Finding the Fourth Proportional to 7,909,671.25, 10,916,511.11 and 5,009,331.79
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Solution
The fourth proportional to 7,909,671.25, 10,916,511.11 and 5,009,331.79 is: 6,913,615.55
Step by Step Solution
- Step 1: Write the proportion equation
7,909,671.25 : 10,916,511.11 = 5,009,331.79 : x - Step 2: Convert to fraction form
7,909,671.25/10,916,511.11 = 5,009,331.79/x - Step 3: Cross multiply
7,909,671.25x = 10,916,511.11 × 5,009,331.79 - Step 4: Simplify right side
7,909,671.25x = 54,684,426,139,211.19 - Step 5: Solve for x
x = 54,684,426,139,211.19/7,909,671.25 - Step 6: Final answer
x = 6,913,615.55
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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.