Finding the Fourth Proportional to 665,607.70, 998,411.55 and 547,509.70
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Solution
The fourth proportional to 665,607.70, 998,411.55 and 547,509.70 is: 821,264.55
Step by Step Solution
- Step 1: Write the proportion equation
665,607.70 : 998,411.55 = 547,509.70 : x - Step 2: Convert to fraction form
665,607.70/998,411.55 = 547,509.70/x - Step 3: Cross multiply
665,607.70x = 998,411.55 × 547,509.70 - Step 4: Simplify right side
665,607.70x = 546,640,008,217.04 - Step 5: Solve for x
x = 546,640,008,217.04/665,607.70 - Step 6: Final answer
x = 821,264.55
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1.5x scale
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.