Finding the Fourth Proportional to 645,421.80, 968,132.70 and 365,485.80
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Solution
The fourth proportional to 645,421.80, 968,132.70 and 365,485.80 is: 548,228.70
Step by Step Solution
- Step 1: Write the proportion equation
645,421.80 : 968,132.70 = 365,485.80 : x - Step 2: Convert to fraction form
645,421.80/968,132.70 = 365,485.80/x - Step 3: Cross multiply
645,421.80x = 968,132.70 × 365,485.80 - Step 4: Simplify right side
645,421.80x = 353,838,754,365.66 - Step 5: Solve for x
x = 353,838,754,365.66/645,421.80 - Step 6: Final answer
x = 548,228.70
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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.