Home / 753,900.36-1,130,905.44-280,585.56

Finding the Fourth Proportional to 753,900.36, 1,130,905.44 and 280,585.56

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Solution

The fourth proportional to 753,900.36, 1,130,905.44 and 280,585.56 is: 420,898.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,900.36 : 1,130,905.44 = 280,585.56 : x
  2. Step 2: Convert to fraction form
    753,900.36/1,130,905.44 = 280,585.56/x
  3. Step 3: Cross multiply
    753,900.36x = 1,130,905.44 × 280,585.56
  4. Step 4: Simplify right side
    753,900.36x = 317,315,736,189.45
  5. Step 5: Solve for x
    x = 317,315,736,189.45/753,900.36
  6. Step 6: Final answer
    x = 420,898.77

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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.