Finding the Fourth Proportional to 520,867.80, 780,135.30 and 310,915.80
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Solution
The fourth proportional to 520,867.80, 780,135.30 and 310,915.80 is: 465,677.45
Step by Step Solution
- Step 1: Write the proportion equation
520,867.80 : 780,135.30 = 310,915.80 : x - Step 2: Convert to fraction form
520,867.80/780,135.30 = 310,915.80/x - Step 3: Cross multiply
520,867.80x = 780,135.30 × 310,915.80 - Step 4: Simplify right side
520,867.80x = 242,556,390,907.74 - Step 5: Solve for x
x = 242,556,390,907.74/520,867.80 - Step 6: Final answer
x = 465,677.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.