Finding the Fourth Proportional to 818,417.21, 1,129,416.07 and 474,452.55
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Solution
The fourth proportional to 818,417.21, 1,129,416.07 and 474,452.55 is: 654,744.72
Step by Step Solution
- Step 1: Write the proportion equation
818,417.21 : 1,129,416.07 = 474,452.55 : x - Step 2: Convert to fraction form
818,417.21/1,129,416.07 = 474,452.55/x - Step 3: Cross multiply
818,417.21x = 1,129,416.07 × 474,452.55 - Step 4: Simplify right side
818,417.21x = 535,854,340,892.24 - Step 5: Solve for x
x = 535,854,340,892.24/818,417.21 - Step 6: Final answer
x = 654,744.72
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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.