Finding the Fourth Proportional to 645,386.21, 968,140.03 and 189,977.75
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Solution
The fourth proportional to 645,386.21, 968,140.03 and 189,977.75 is: 284,984.49
Step by Step Solution
- Step 1: Write the proportion equation
645,386.21 : 968,140.03 = 189,977.75 : x - Step 2: Convert to fraction form
645,386.21/968,140.03 = 189,977.75/x - Step 3: Cross multiply
645,386.21x = 968,140.03 × 189,977.75 - Step 4: Simplify right side
645,386.21x = 183,925,058,793.74 - Step 5: Solve for x
x = 183,925,058,793.74/645,386.21 - Step 6: Final answer
x = 284,984.49
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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.