Home / 821,490.84-1,133,644.86-458,919.90

Finding the Fourth Proportional to 821,490.84, 1,133,644.86 and 458,919.90

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Solution

The fourth proportional to 821,490.84, 1,133,644.86 and 458,919.90 is: 633,302.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,490.84 : 1,133,644.86 = 458,919.90 : x
  2. Step 2: Convert to fraction form
    821,490.84/1,133,644.86 = 458,919.90/x
  3. Step 3: Cross multiply
    821,490.84x = 1,133,644.86 × 458,919.90
  4. Step 4: Simplify right side
    821,490.84x = 520,252,185,786.71
  5. Step 5: Solve for x
    x = 520,252,185,786.71/821,490.84
  6. Step 6: Final answer
    x = 633,302.48

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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.