Finding the Fourth Proportional to 842,430.80, 1,263,991.80 and 310,206.80
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Solution
The fourth proportional to 842,430.80, 1,263,991.80 and 310,206.80 is: 465,437.46
Step by Step Solution
- Step 1: Write the proportion equation
842,430.80 : 1,263,991.80 = 310,206.80 : x - Step 2: Convert to fraction form
842,430.80/1,263,991.80 = 310,206.80/x - Step 3: Cross multiply
842,430.80x = 1,263,991.80 × 310,206.80 - Step 4: Simplify right side
842,430.80x = 392,098,851,504.24 - Step 5: Solve for x
x = 392,098,851,504.24/842,430.80 - Step 6: Final answer
x = 465,437.46
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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.