Home / 728,673.15-1,005,303.92-422,580.63

Finding the Fourth Proportional to 728,673.15, 1,005,303.92 and 422,580.63

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Solution

The fourth proportional to 728,673.15, 1,005,303.92 and 422,580.63 is: 583,007.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,673.15 : 1,005,303.92 = 422,580.63 : x
  2. Step 2: Convert to fraction form
    728,673.15/1,005,303.92 = 422,580.63/x
  3. Step 3: Cross multiply
    728,673.15x = 1,005,303.92 × 422,580.63
  4. Step 4: Simplify right side
    728,673.15x = 424,821,963,855.07
  5. Step 5: Solve for x
    x = 424,821,963,855.07/728,673.15
  6. Step 6: Final answer
    x = 583,007.57

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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.