Finding the Fourth Proportional to 825,009.18, 1,138,421.46 and 457,477.08
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Solution
The fourth proportional to 825,009.18, 1,138,421.46 and 457,477.08 is: 631,267.79
Step by Step Solution
- Step 1: Write the proportion equation
825,009.18 : 1,138,421.46 = 457,477.08 : x - Step 2: Convert to fraction form
825,009.18/1,138,421.46 = 457,477.08/x - Step 3: Cross multiply
825,009.18x = 1,138,421.46 × 457,477.08 - Step 4: Simplify right side
825,009.18x = 520,801,725,330.14 - Step 5: Solve for x
x = 520,801,725,330.14/825,009.18 - Step 6: Final answer
x = 631,267.79
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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.