Home / 728,674.15-1,005,305.30-422,581.63

Finding the Fourth Proportional to 728,674.15, 1,005,305.30 and 422,581.63

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Solution

The fourth proportional to 728,674.15, 1,005,305.30 and 422,581.63 is: 583,008.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,674.15 : 1,005,305.30 = 422,581.63 : x
  2. Step 2: Convert to fraction form
    728,674.15/1,005,305.30 = 422,581.63/x
  3. Step 3: Cross multiply
    728,674.15x = 1,005,305.30 × 422,581.63
  4. Step 4: Simplify right side
    728,674.15x = 424,823,552,321.64
  5. Step 5: Solve for x
    x = 424,823,552,321.64/728,674.15
  6. Step 6: Final answer
    x = 583,008.95

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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.