Home / 728,394.93-1,005,192.59-422,491.95

Finding the Fourth Proportional to 728,394.93, 1,005,192.59 and 422,491.95

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Solution

The fourth proportional to 728,394.93, 1,005,192.59 and 422,491.95 is: 583,043.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,394.93 : 1,005,192.59 = 422,491.95 : x
  2. Step 2: Convert to fraction form
    728,394.93/1,005,192.59 = 422,491.95/x
  3. Step 3: Cross multiply
    728,394.93x = 1,005,192.59 × 422,491.95
  4. Step 4: Simplify right side
    728,394.93x = 424,685,775,362.19
  5. Step 5: Solve for x
    x = 424,685,775,362.19/728,394.93
  6. Step 6: Final answer
    x = 583,043.29

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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.