Finding the Fourth Proportional to 778,472.10, 1,073,337.12 and 640,167.84
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Solution
The fourth proportional to 778,472.10, 1,073,337.12 and 640,167.84 is: 882,646.80
Step by Step Solution
- Step 1: Write the proportion equation
778,472.10 : 1,073,337.12 = 640,167.84 : x - Step 2: Convert to fraction form
778,472.10/1,073,337.12 = 640,167.84/x - Step 3: Cross multiply
778,472.10x = 1,073,337.12 × 640,167.84 - Step 4: Simplify right side
778,472.10x = 687,115,905,702.22 - Step 5: Solve for x
x = 687,115,905,702.22/778,472.10 - Step 6: Final answer
x = 882,646.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.