Finding the Fourth Proportional to 714,130.20, 985,466.70 and 391,832.28
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Solution
The fourth proportional to 714,130.20, 985,466.70 and 391,832.28 is: 540,710.45
Step by Step Solution
- Step 1: Write the proportion equation
714,130.20 : 985,466.70 = 391,832.28 : x - Step 2: Convert to fraction form
714,130.20/985,466.70 = 391,832.28/x - Step 3: Cross multiply
714,130.20x = 985,466.70 × 391,832.28 - Step 4: Simplify right side
714,130.20x = 386,137,663,925.08 - Step 5: Solve for x
x = 386,137,663,925.08/714,130.20 - Step 6: Final answer
x = 540,710.45
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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.