Finding the Fourth Proportional to 912,913.70, 1,280,178.70 and 912,913.70
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Solution
The fourth proportional to 912,913.70, 1,280,178.70 and 912,913.70 is: 1,280,178.70
Step by Step Solution
- Step 1: Write the proportion equation
912,913.70 : 1,280,178.70 = 912,913.70 : x - Step 2: Convert to fraction form
912,913.70/1,280,178.70 = 912,913.70/x - Step 3: Cross multiply
912,913.70x = 1,280,178.70 × 912,913.70 - Step 4: Simplify right side
912,913.70x = 1,168,692,673,678.19 - Step 5: Solve for x
x = 1,168,692,673,678.19/912,913.70 - Step 6: Final answer
x = 1,280,178.70
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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.