Finding the Fourth Proportional to 788,140.08, 1,087,640.16 and 448,630.08
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Solution
The fourth proportional to 788,140.08, 1,087,640.16 and 448,630.08 is: 619,113.41
Step by Step Solution
- Step 1: Write the proportion equation
788,140.08 : 1,087,640.16 = 448,630.08 : x - Step 2: Convert to fraction form
788,140.08/1,087,640.16 = 448,630.08/x - Step 3: Cross multiply
788,140.08x = 1,087,640.16 × 448,630.08 - Step 4: Simplify right side
788,140.08x = 487,948,091,992.01 - Step 5: Solve for x
x = 487,948,091,992.01/788,140.08 - Step 6: Final answer
x = 619,113.41
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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.