Home / 872,384.62-1,308,786.05-422,579.77

Finding the Fourth Proportional to 872,384.62, 1,308,786.05 and 422,579.77

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Solution

The fourth proportional to 872,384.62, 1,308,786.05 and 422,579.77 is: 633,970.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,384.62 : 1,308,786.05 = 422,579.77 : x
  2. Step 2: Convert to fraction form
    872,384.62/1,308,786.05 = 422,579.77/x
  3. Step 3: Cross multiply
    872,384.62x = 1,308,786.05 × 422,579.77
  4. Step 4: Simplify right side
    872,384.62x = 553,066,507,988.21
  5. Step 5: Solve for x
    x = 553,066,507,988.21/872,384.62
  6. Step 6: Final answer
    x = 633,970.95

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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.