Home / 979,842.12-1,469,385.21-380,724.39

Finding the Fourth Proportional to 979,842.12, 1,469,385.21 and 380,724.39

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Solution

The fourth proportional to 979,842.12, 1,469,385.21 and 380,724.39 is: 570,939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,842.12 : 1,469,385.21 = 380,724.39 : x
  2. Step 2: Convert to fraction form
    979,842.12/1,469,385.21 = 380,724.39/x
  3. Step 3: Cross multiply
    979,842.12x = 1,469,385.21 × 380,724.39
  4. Step 4: Simplify right side
    979,842.12x = 559,430,787,752.27
  5. Step 5: Solve for x
    x = 559,430,787,752.27/979,842.12
  6. Step 6: Final answer
    x = 570,939.72

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1.5x scale

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.