Finding the Fourth Proportional to 763,291.80, 1,144,937.70 and 390,043.80
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Solution
The fourth proportional to 763,291.80, 1,144,937.70 and 390,043.80 is: 585,065.70
Step by Step Solution
- Step 1: Write the proportion equation
763,291.80 : 1,144,937.70 = 390,043.80 : x - Step 2: Convert to fraction form
763,291.80/1,144,937.70 = 390,043.80/x - Step 3: Cross multiply
763,291.80x = 1,144,937.70 × 390,043.80 - Step 4: Simplify right side
763,291.80x = 446,575,851,271.26 - Step 5: Solve for x
x = 446,575,851,271.26/763,291.80 - Step 6: Final answer
x = 585,065.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.