Finding the Fourth Proportional to 689,406.70, 1,034,110.05 and 512,259.70
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Solution
The fourth proportional to 689,406.70, 1,034,110.05 and 512,259.70 is: 768,389.55
Step by Step Solution
- Step 1: Write the proportion equation
689,406.70 : 1,034,110.05 = 512,259.70 : x - Step 2: Convert to fraction form
689,406.70/1,034,110.05 = 512,259.70/x - Step 3: Cross multiply
689,406.70x = 1,034,110.05 × 512,259.70 - Step 4: Simplify right side
689,406.70x = 529,732,903,979.99 - Step 5: Solve for x
x = 529,732,903,979.99/689,406.70 - Step 6: Final answer
x = 768,389.55
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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.