Finding the Fourth Proportional to 921,579.45, 1,271,406.74 and 558,870.99
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Solution
The fourth proportional to 921,579.45, 1,271,406.74 and 558,870.99 is: 771,015.83
Step by Step Solution
- Step 1: Write the proportion equation
921,579.45 : 1,271,406.74 = 558,870.99 : x - Step 2: Convert to fraction form
921,579.45/1,271,406.74 = 558,870.99/x - Step 3: Cross multiply
921,579.45x = 1,271,406.74 × 558,870.99 - Step 4: Simplify right side
921,579.45x = 710,552,340,682.12 - Step 5: Solve for x
x = 710,552,340,682.12/921,579.45 - Step 6: Final answer
x = 771,015.83
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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.