Home / 873,900.72-1,205,979.84-491,928.48

Finding the Fourth Proportional to 873,900.72, 1,205,979.84 and 491,928.48

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Solution

The fourth proportional to 873,900.72, 1,205,979.84 and 491,928.48 is: 678,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,900.72 : 1,205,979.84 = 491,928.48 : x
  2. Step 2: Convert to fraction form
    873,900.72/1,205,979.84 = 491,928.48/x
  3. Step 3: Cross multiply
    873,900.72x = 1,205,979.84 × 491,928.48
  4. Step 4: Simplify right side
    873,900.72x = 593,255,829,601.84
  5. Step 5: Solve for x
    x = 593,255,829,601.84/873,900.72
  6. Step 6: Final answer
    x = 678,859.53

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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.