Home / 405,025.60-607,538.40-272,315.20

Finding the Fourth Proportional to 405,025.60, 607,538.40 and 272,315.20

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Solution

The fourth proportional to 405,025.60, 607,538.40 and 272,315.20 is: 408,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,025.60 : 607,538.40 = 272,315.20 : x
  2. Step 2: Convert to fraction form
    405,025.60/607,538.40 = 272,315.20/x
  3. Step 3: Cross multiply
    405,025.60x = 607,538.40 × 272,315.20
  4. Step 4: Simplify right side
    405,025.60x = 165,441,940,903.68
  5. Step 5: Solve for x
    x = 165,441,940,903.68/405,025.60
  6. Step 6: Final answer
    x = 408,472.80

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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.