Finding the Fourth Proportional to 913,328.10, 1,281,458.70 and 913,328.10
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Solution
The fourth proportional to 913,328.10, 1,281,458.70 and 913,328.10 is: 1,281,458.70
Step by Step Solution
- Step 1: Write the proportion equation
913,328.10 : 1,281,458.70 = 913,328.10 : x - Step 2: Convert to fraction form
913,328.10/1,281,458.70 = 913,328.10/x - Step 3: Cross multiply
913,328.10x = 1,281,458.70 × 913,328.10 - Step 4: Simplify right side
913,328.10x = 1,170,392,239,699.47 - Step 5: Solve for x
x = 1,170,392,239,699.47/913,328.10 - Step 6: Final answer
x = 1,281,458.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.