Home / 691,674.12-1,036,108.80-391,523.76

Finding the Fourth Proportional to 691,674.12, 1,036,108.80 and 391,523.76

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Solution

The fourth proportional to 691,674.12, 1,036,108.80 and 391,523.76 is: 586,491.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,674.12 : 1,036,108.80 = 391,523.76 : x
  2. Step 2: Convert to fraction form
    691,674.12/1,036,108.80 = 391,523.76/x
  3. Step 3: Cross multiply
    691,674.12x = 1,036,108.80 × 391,523.76
  4. Step 4: Simplify right side
    691,674.12x = 405,661,213,145.09
  5. Step 5: Solve for x
    x = 405,661,213,145.09/691,674.12
  6. Step 6: Final answer
    x = 586,491.82

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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.