Finding the Fourth Proportional to 632,504.40, 872,938.26 and 390,904.08
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Solution
The fourth proportional to 632,504.40, 872,938.26 and 390,904.08 is: 539,498.42
Step by Step Solution
- Step 1: Write the proportion equation
632,504.40 : 872,938.26 = 390,904.08 : x - Step 2: Convert to fraction form
632,504.40/872,938.26 = 390,904.08/x - Step 3: Cross multiply
632,504.40x = 872,938.26 × 390,904.08 - Step 4: Simplify right side
632,504.40x = 341,235,127,422.10 - Step 5: Solve for x
x = 341,235,127,422.10/632,504.40 - Step 6: Final answer
x = 539,498.42
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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.