Home / 821,479.28-1,133,635.95-458,899.92

Finding the Fourth Proportional to 821,479.28, 1,133,635.95 and 458,899.92

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Solution

The fourth proportional to 821,479.28, 1,133,635.95 and 458,899.92 is: 633,278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,479.28 : 1,133,635.95 = 458,899.92 : x
  2. Step 2: Convert to fraction form
    821,479.28/1,133,635.95 = 458,899.92/x
  3. Step 3: Cross multiply
    821,479.28x = 1,133,635.95 × 458,899.92
  4. Step 4: Simplify right side
    821,479.28x = 520,225,446,764.12
  5. Step 5: Solve for x
    x = 520,225,446,764.12/821,479.28
  6. Step 6: Final answer
    x = 633,278.85

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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.