Home / 457,345.20-684,705.60-280,198.20

Finding the Fourth Proportional to 457,345.20, 684,705.60 and 280,198.20

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Solution

The fourth proportional to 457,345.20, 684,705.60 and 280,198.20 is: 419,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,345.20 : 684,705.60 = 280,198.20 : x
  2. Step 2: Convert to fraction form
    457,345.20/684,705.60 = 280,198.20/x
  3. Step 3: Cross multiply
    457,345.20x = 684,705.60 × 280,198.20
  4. Step 4: Simplify right side
    457,345.20x = 191,853,276,649.92
  5. Step 5: Solve for x
    x = 191,853,276,649.92/457,345.20
  6. Step 6: Final answer
    x = 419,493.36

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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.