Home / 728,384.61-1,005,244.25-422,554.53

Finding the Fourth Proportional to 728,384.61, 1,005,244.25 and 422,554.53

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Solution

The fourth proportional to 728,384.61, 1,005,244.25 and 422,554.53 is: 583,167.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,384.61 : 1,005,244.25 = 422,554.53 : x
  2. Step 2: Convert to fraction form
    728,384.61/1,005,244.25 = 422,554.53/x
  3. Step 3: Cross multiply
    728,384.61x = 1,005,244.25 × 422,554.53
  4. Step 4: Simplify right side
    728,384.61x = 424,770,509,481.18
  5. Step 5: Solve for x
    x = 424,770,509,481.18/728,384.61
  6. Step 6: Final answer
    x = 583,167.88

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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.