Home / 811,867.10-1,120,348.95-449,306.24

Finding the Fourth Proportional to 811,867.10, 1,120,348.95 and 449,306.24

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Solution

The fourth proportional to 811,867.10, 1,120,348.95 and 449,306.24 is: 620,027.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,867.10 : 1,120,348.95 = 449,306.24 : x
  2. Step 2: Convert to fraction form
    811,867.10/1,120,348.95 = 449,306.24/x
  3. Step 3: Cross multiply
    811,867.10x = 1,120,348.95 × 449,306.24
  4. Step 4: Simplify right side
    811,867.10x = 503,379,774,212.45
  5. Step 5: Solve for x
    x = 503,379,774,212.45/811,867.10
  6. Step 6: Final answer
    x = 620,027.31

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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.