Home / 638,624.20-881,296.02-352,156.36

Finding the Fourth Proportional to 638,624.20, 881,296.02 and 352,156.36

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Solution

The fourth proportional to 638,624.20, 881,296.02 and 352,156.36 is: 485,972.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,624.20 : 881,296.02 = 352,156.36 : x
  2. Step 2: Convert to fraction form
    638,624.20/881,296.02 = 352,156.36/x
  3. Step 3: Cross multiply
    638,624.20x = 881,296.02 × 352,156.36
  4. Step 4: Simplify right side
    638,624.20x = 310,353,998,485.69
  5. Step 5: Solve for x
    x = 310,353,998,485.69/638,624.20
  6. Step 6: Final answer
    x = 485,972.81

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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.