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Finding the Fourth Proportional to 903,903.20, 1,247,383 and 496,011.88

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Solution

The fourth proportional to 903,903.20, 1,247,383 and 496,011.88 is: 684,494.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,903.20 : 1,247,383 = 496,011.88 : x
  2. Step 2: Convert to fraction form
    903,903.20/1,247,383 = 496,011.88/x
  3. Step 3: Cross multiply
    903,903.20x = 1,247,383 × 496,011.88
  4. Step 4: Simplify right side
    903,903.20x = 618,716,786,910.04
  5. Step 5: Solve for x
    x = 618,716,786,910.04/903,903.20
  6. Step 6: Final answer
    x = 684,494.52

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1.5x scale

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.