Finding the Fourth Proportional to 877,357.20, 1,210,756.80 and 474,949.20
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Solution
The fourth proportional to 877,357.20, 1,210,756.80 and 474,949.20 is: 655,431.99
Step by Step Solution
- Step 1: Write the proportion equation
877,357.20 : 1,210,756.80 = 474,949.20 : x - Step 2: Convert to fraction form
877,357.20/1,210,756.80 = 474,949.20/x - Step 3: Cross multiply
877,357.20x = 1,210,756.80 × 474,949.20 - Step 4: Simplify right side
877,357.20x = 575,047,973,554.56 - Step 5: Solve for x
x = 575,047,973,554.56/877,357.20 - Step 6: Final answer
x = 655,431.99
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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.