Home / 696,728.99-1,045,042.72-312,596.80

Finding the Fourth Proportional to 696,728.99, 1,045,042.72 and 312,596.80

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Solution

The fourth proportional to 696,728.99, 1,045,042.72 and 312,596.80 is: 468,872.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,728.99 : 1,045,042.72 = 312,596.80 : x
  2. Step 2: Convert to fraction form
    696,728.99/1,045,042.72 = 312,596.80/x
  3. Step 3: Cross multiply
    696,728.99x = 1,045,042.72 × 312,596.80
  4. Step 4: Simplify right side
    696,728.99x = 326,677,003,347.10
  5. Step 5: Solve for x
    x = 326,677,003,347.10/696,728.99
  6. Step 6: Final answer
    x = 468,872.42

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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.