Home / 821,885.76-1,134,551.48-499,698.72

Finding the Fourth Proportional to 821,885.76, 1,134,551.48 and 499,698.72

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Solution

The fourth proportional to 821,885.76, 1,134,551.48 and 499,698.72 is: 689,796.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,885.76 : 1,134,551.48 = 499,698.72 : x
  2. Step 2: Convert to fraction form
    821,885.76/1,134,551.48 = 499,698.72/x
  3. Step 3: Cross multiply
    821,885.76x = 1,134,551.48 × 499,698.72
  4. Step 4: Simplify right side
    821,885.76x = 566,933,919,831.61
  5. Step 5: Solve for x
    x = 566,933,919,831.61/821,885.76
  6. Step 6: Final answer
    x = 689,796.50

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1.5x scale

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.