Home / 486,983.40-672,103.86-280,247.52

Finding the Fourth Proportional to 486,983.40, 672,103.86 and 280,247.52

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Solution

The fourth proportional to 486,983.40, 672,103.86 and 280,247.52 is: 386,780.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,983.40 : 672,103.86 = 280,247.52 : x
  2. Step 2: Convert to fraction form
    486,983.40/672,103.86 = 280,247.52/x
  3. Step 3: Cross multiply
    486,983.40x = 672,103.86 × 280,247.52
  4. Step 4: Simplify right side
    486,983.40x = 188,355,439,947.43
  5. Step 5: Solve for x
    x = 188,355,439,947.43/486,983.40
  6. Step 6: Final answer
    x = 386,780.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.