Home / 778,558.46-1,074,412.23-420,862.46

Finding the Fourth Proportional to 778,558.46, 1,074,412.23 and 420,862.46

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Solution

The fourth proportional to 778,558.46, 1,074,412.23 and 420,862.46 is: 580,791.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,558.46 : 1,074,412.23 = 420,862.46 : x
  2. Step 2: Convert to fraction form
    778,558.46/1,074,412.23 = 420,862.46/x
  3. Step 3: Cross multiply
    778,558.46x = 1,074,412.23 × 420,862.46
  4. Step 4: Simplify right side
    778,558.46x = 452,179,774,171.89
  5. Step 5: Solve for x
    x = 452,179,774,171.89/778,558.46
  6. Step 6: Final answer
    x = 580,791.04

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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.