Home / 840,731.37-1,261,061.77-391,297.65

Finding the Fourth Proportional to 840,731.37, 1,261,061.77 and 391,297.65

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Solution

The fourth proportional to 840,731.37, 1,261,061.77 and 391,297.65 is: 586,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,731.37 : 1,261,061.77 = 391,297.65 : x
  2. Step 2: Convert to fraction form
    840,731.37/1,261,061.77 = 391,297.65/x
  3. Step 3: Cross multiply
    840,731.37x = 1,261,061.77 × 391,297.65
  4. Step 4: Simplify right side
    840,731.37x = 493,450,507,105.84
  5. Step 5: Solve for x
    x = 493,450,507,105.84/840,731.37
  6. Step 6: Final answer
    x = 586,930.05

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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.