Home / 483,605.42-725,407.20-128,619.78

Finding the Fourth Proportional to 483,605.42, 725,407.20 and 128,619.78

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Solution

The fourth proportional to 483,605.42, 725,407.20 and 128,619.78 is: 192,929.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,605.42 : 725,407.20 = 128,619.78 : x
  2. Step 2: Convert to fraction form
    483,605.42/725,407.20 = 128,619.78/x
  3. Step 3: Cross multiply
    483,605.42x = 725,407.20 × 128,619.78
  4. Step 4: Simplify right side
    483,605.42x = 93,301,714,474.42
  5. Step 5: Solve for x
    x = 93,301,714,474.42/483,605.42
  6. Step 6: Final answer
    x = 192,929.42

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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.