Finding the Fourth Proportional to 518,905.70, 778,358.55 and 518,905.70
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Solution
The fourth proportional to 518,905.70, 778,358.55 and 518,905.70 is: 778,358.55
Step by Step Solution
- Step 1: Write the proportion equation
518,905.70 : 778,358.55 = 518,905.70 : x - Step 2: Convert to fraction form
518,905.70/778,358.55 = 518,905.70/x - Step 3: Cross multiply
518,905.70x = 778,358.55 × 518,905.70 - Step 4: Simplify right side
518,905.70x = 403,894,688,238.74 - Step 5: Solve for x
x = 403,894,688,238.74/518,905.70 - Step 6: Final answer
x = 778,358.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.