Home / 420,005.40-574,970.37-417,003.72

Finding the Fourth Proportional to 420,005.40, 574,970.37 and 417,003.72

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Solution

The fourth proportional to 420,005.40, 574,970.37 and 417,003.72 is: 570,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,005.40 : 574,970.37 = 417,003.72 : x
  2. Step 2: Convert to fraction form
    420,005.40/574,970.37 = 417,003.72/x
  3. Step 3: Cross multiply
    420,005.40x = 574,970.37 × 417,003.72
  4. Step 4: Simplify right side
    420,005.40x = 239,764,783,179.78
  5. Step 5: Solve for x
    x = 239,764,783,179.78/420,005.40
  6. Step 6: Final answer
    x = 570,861.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.